CCI Registered Cardiovascular Invasive Specialist (RCIS) — Questions and Answers

Question 1: Which parameter best quantifies the severity of renal artery stenosis on duplex ultrasound?

Renal-to-aortic ratio (RAR) greater than 3.5 (Correct answer)
Renal artery peak systolic velocity alone
End-diastolic velocity of the renal artery
Resistive index of the renal parenchyma

Correct answer: Renal-to-aortic ratio (RAR) greater than 3.5

A renal-to-aortic ratio (RAR) greater than 3.5 combined with peak systolic velocity >180 cm/s is the standard duplex criterion for significant renal artery stenosis.

Question 2: Which access site complication is most unique to the radial approach compared to the femoral approach in cardiac catheterization?

Radial artery occlusion (Correct answer)
Pseudoaneurysm formation
Retroperitoneal hematoma
Arteriovenous fistula

Correct answer: Radial artery occlusion

Radial artery occlusion occurs in approximately 1-5% of transradial procedures and is rare with the femoral approach.

Question 3: When measuring cardiac output by the Fick method during catheterization, which three variables are required?

Heart rate, stroke volume, ejection fraction
Mean arterial pressure, CVP, systemic vascular resistance
Oxygen consumption, arterial O2 content, mixed venous O2 content (Correct answer)
PCWP, PA pressure, pulmonary vascular resistance

Correct answer: Oxygen consumption, arterial O2 content, mixed venous O2 content

The Fick equation: CO = VO2 / (CaO2 - CvO2), requiring oxygen consumption and the arteriovenous oxygen content difference.

Question 4: When a conflict arises between standard procedures and a unique situation in Cardiac Catheterization Procedures, what should a CVT professional prioritize?

Strict adherence to written procedures without exception
Safety and ethical obligations while seeking expert consultation (Correct answer)
The preference of the client or stakeholder
The most cost-effective solution available

Correct answer: Safety and ethical obligations while seeking expert consultation

Safety and ethics always take priority in Cardiac Catheterization Procedures. When standard procedures don't adequately address a unique situation, consulting with experienced colleagues or supervisors ensures both safety and professional standards are maintained.

Question 5: Nitroglycerin relieves angina primarily by:

Blocking beta-adrenergic receptors
Increasing cardiac contractility
Increasing myocardial oxygen supply via coronary vasoconstriction
Reducing preload and afterload through venous and arterial dilation (Correct answer)

Correct answer: Reducing preload and afterload through venous and arterial dilation

Nitroglycerin is a nitrate that donates nitric oxide, causing smooth muscle relaxation, venodilation, and reduced preload, decreasing myocardial oxygen demand.

Question 6: During lower extremity arterial duplex imaging, a focal PSV greater than 400 cm/s with a velocity ratio greater than 4:1 compared to the proximal segment indicates what degree of stenosis?

Greater than 75% (Correct answer)
Total occlusion
Less than 50%
50-75%

Correct answer: Greater than 75%

A PSV exceeding 400 cm/s with a velocity ratio greater than 4:1 corresponds to a hemodynamically severe stenosis of greater than 75% diameter reduction.

Question 7: After successful PCI, TIMI 3 flow is achieved. What does TIMI 3 indicate?

Normal flow with complete and rapid distal opacification (Correct answer)
Partial flow that fails to opacify the distal vessel
No flow beyond the obstruction
Complete flow but slower than normal

Correct answer: Normal flow with complete and rapid distal opacification

TIMI 3 indicates normal epicardial coronary flow with complete and timely opacification of the distal vessel.

Question 8: What is the normal resting cardiac output for an average adult?

7–9 L/min
10–12 L/min
4–6 L/min (Correct answer)
2–3 L/min

Correct answer: 4–6 L/min

Normal resting cardiac output is approximately 4–6 L/min, typically around 5 L/min.

Question 9: In Poiseuille's law, if the radius of a vessel is halved, the resistance to flow will:

Quadruple
Increase 16-fold (Correct answer)
Increase 8-fold
Double

Correct answer: Increase 16-fold

Poiseuille's law states resistance is inversely proportional to the fourth power of the radius, so halving the radius increases resistance 16-fold (2^4 = 16).

Question 10: Which absolute contraindication requires immediate termination of a treadmill stress test?

Heart rate reaches 85% of maximum predicted
Patient requests a water break
Patient reports mild fatigue
Sustained ventricular tachycardia develops (Correct answer)

Correct answer: Sustained ventricular tachycardia develops

Sustained ventricular tachycardia is an absolute indication to stop a stress test immediately due to the risk of hemodynamic compromise.

Question 11: The 'v' wave in the pulmonary artery wedge (PCWP) tracing represents:

Mitral valve closure
Passive ventricular filling with mitral valve open (Correct answer)
Isovolumetric relaxation
Atrial contraction

Correct answer: Passive ventricular filling with mitral valve open

The 'v' wave reflects passive filling of the left atrium during ventricular systole while the mitral valve is closed.

Question 12: The QTc interval is calculated to correct for heart rate. Which formula is most commonly used?

Bazett formula (Correct answer)
Framingham formula
Hodges formula
Fridericia formula

Correct answer: Bazett formula

The Bazett formula (QTc = QT / √RR) is the most widely used method for heart rate correction of the QT interval despite its limitations at extreme rates.

Question 13: Why is hand hygiene critical before and after patient contact?

To keep the room clean
To prepare for using equipment
To avoid getting gloves dirty
To reduce the spread of pathogens (Correct answer)

Correct answer: To reduce the spread of pathogens

Hand hygiene is a primary measure in preventing healthcare-associated infections and protecting both patient and provider.

Question 14: Which standard of practice is MOST important for ensuring quality in Cardiac Catheterization Procedures?

Following evidence-based protocols while adapting to specific circumstances (Correct answer)
Strictly adhering to the same procedure in every situation
Minimizing documentation to focus on practical work
Using the most advanced technology available regardless of need

Correct answer: Following evidence-based protocols while adapting to specific circumstances

Evidence-based protocols provide a foundation of proven practices, but effective Cardiovascular Technologist professionals must also adapt their approach based on specific circumstances and individual case needs within Cardiac Catheterization Procedures.

Question 15: Which complication is uniquely associated with the left ventricular lead of a CRT device compared to a standard RV lead?

Pneumothorax at implant
Phrenic nerve (diaphragmatic) stimulation (Correct answer)
Cardiac perforation into the pericardium
Lead dislodgement from the right ventricular apex

Correct answer: Phrenic nerve (diaphragmatic) stimulation

The lateral cardiac veins used for LV lead placement are in close proximity to the phrenic nerve, making diaphragmatic stimulation a common and unique complication of CRT.

Question 16: Which standard of practice is MOST important for ensuring quality in Hemodynamic Monitoring?

Using the most advanced technology available regardless of need
Following evidence-based protocols while adapting to specific circumstances (Correct answer)
Strictly adhering to the same procedure in every situation
Minimizing documentation to focus on practical work

Correct answer: Following evidence-based protocols while adapting to specific circumstances

Question 17: A patient develops a sudden drop in blood pressure and loss of cardiac output during catheterization. The monitor shows electrical alternans. What is the most likely complication?

Vasovagal reaction
Ventricular fibrillation
Air embolism
Cardiac tamponade (Correct answer)

Correct answer: Cardiac tamponade

Cardiac tamponade causes electrical alternans, hemodynamic compromise, and requires immediate pericardiocentesis.

Question 18: In a nuclear stress test using Tc-99m sestamibi, what finding on the resting scan compared to the stress scan indicates a fixed defect?

Uniform tracer uptake on both sets of images
Defect present on both stress and rest images in the same location (Correct answer)
Defect present on stress images only
Defect on rest images that resolves on stress images

Correct answer: Defect present on both stress and rest images in the same location

A fixed defect (present on both stress and rest images) represents infarcted, non-viable myocardium rather than ischemia, which would show reversibility on rest imaging.

Question 19: Which anticoagulant is most commonly used during cardiac catheterization to prevent thrombus formation?

Dabigatran
Warfarin
Heparin (Correct answer)
Rivaroxaban

Correct answer: Heparin

Unfractionated heparin is the standard anticoagulant for procedural anticoagulation during cardiac catheterization due to its rapid onset and reversibility.

Question 20: What is the primary mechanism of action of calcium channel blockers in treating cardiac arrhythmias?

Block L-type calcium channels to slow SA and AV node activity (Correct answer)
Block sodium channels to slow conduction
Increase potassium channel conductance
Block beta-adrenergic receptors

Correct answer: Block L-type calcium channels to slow SA and AV node activity

Non-dihydropyridine CCBs (verapamil, diltiazem) block L-type calcium channels in the SA and AV nodes, slowing automaticity and conduction to control rate.

Question 21: In Wolff-Parkinson-White (WPW) syndrome, which EP study finding confirms the presence of an accessory pathway?

Absence of a recordable His bundle potential
Short or negative HV interval with ventricular pre-excitation (Correct answer)
Prolonged HV interval greater than 70 ms
Complete AV block induced during atrial pacing

Correct answer: Short or negative HV interval with ventricular pre-excitation

WPW produces a short or negative HV interval because the ventricles are pre-excited via the accessory pathway before normal His-Purkinje conduction.

Question 22: Which of the following is a responsibility of a cardiovascular technologist regarding safety?

Ignoring alarm warnings
Skipping equipment checks
Documenting patient vitals incorrectly
Inspecting and maintaining equipment (Correct answer)

Correct answer: Inspecting and maintaining equipment

Inspecting and maintaining equipment ensures safe operation and minimizes risk to the patient.

Question 23: During intraoperative duplex scanning of a carotid endarterectomy site, a focal area of reversed color flow at the distal end point of the endarterectomy is most consistent with:

Intimal flap or step defect causing flow separation (Correct answer)
Carotid spasm
Residual stenosis
Normal post-endarterectomy flow pattern

Correct answer: Intimal flap or step defect causing flow separation

A focal reversed color zone at the distal endarterectomy end point suggests an intimal flap or step defect that creates flow separation and potential thrombosis risk.

Question 24: Which vessel carries deoxygenated blood to the lungs?

Aorta
Pulmonary artery (Correct answer)
Superior vena cava
Pulmonary vein

Correct answer: Pulmonary artery

The pulmonary artery is the only artery in the body that carries deoxygenated blood, transporting it from the right ventricle to the lungs.

Question 25: Pulse pressure variation (PPV) >13% during mechanical ventilation most reliably predicts:

Systemic hypertension
Fluid responsiveness (Correct answer)
Pulmonary edema
Cardiac tamponade

Correct answer: Fluid responsiveness

PPV >13% in mechanically ventilated patients indicates significant preload dependence, predicting that cardiac output will increase with fluid administration.

Question 26: Left ventricular ejection fraction (LVEF) is calculated as:

SV / EDV × 100 (Correct answer)
SV / ESV × 100
CO / HR × 100
EDV / ESV × 100

Correct answer: SV / EDV × 100

LVEF = (stroke volume / end-diastolic volume) × 100, where stroke volume = EDV − ESV; normal is ≥55%.

Question 27: When a conflict arises between standard procedures and a unique situation in ECG Interpretation & Analysis, what should a CVT professional prioritize?

Strict adherence to written procedures without exception
Safety and ethical obligations while seeking expert consultation (Correct answer)
The most cost-effective solution available
The preference of the client or stakeholder

Correct answer: Safety and ethical obligations while seeking expert consultation

Safety and ethics always take priority in ECG Interpretation & Analysis. When standard procedures don't adequately address a unique situation, consulting with experienced colleagues or supervisors ensures both safety and professional standards are maintained.

Question 28: A corrected QT interval (QTc) is calculated using Bazett's formula. Which formula is correct?

QTc = QT × √RR
QTc = QT / √RR (Correct answer)
QTc = QT − RR
QTc = QT + RR

Correct answer: QTc = QT / √RR

Bazett's formula corrects the QT interval for heart rate by dividing the measured QT by the square root of the RR interval (in seconds): QTc = QT/√RR.

Question 29: Which chamber of the heart receives oxygenated blood from the lungs?

Right ventricle
Right atrium
Left atrium (Correct answer)
Left ventricle

Correct answer: Left atrium

The left atrium receives oxygen-rich blood from the pulmonary veins coming from the lungs.

Question 30: What does the P wave represent on an ECG?

Atrial repolarization
Ventricular repolarization
Ventricular depolarization
Atrial depolarization (Correct answer)

Correct answer: Atrial depolarization

The P wave represents atrial depolarization, which is the electrical activation of the atria.

Question 31: Which artifact on an ECG is most commonly caused by patient muscle tremor or shivering?

Baseline wander
Somatic tremor artifact (Correct answer)
Lead reversal artifact
AC interference

Correct answer: Somatic tremor artifact

Somatic tremor artifact appears as irregular, high-frequency oscillations on the baseline caused by involuntary muscle activity.

Question 32: Which finding on color flow Doppler best indicates severe mitral regurgitation?

E/A ratio > 2
Vena contracta width < 3 mm
Regurgitant jet area < 4 cm²
Vena contracta width > 7 mm (Correct answer)

Correct answer: Vena contracta width > 7 mm

A vena contracta width > 7 mm is consistent with severe mitral regurgitation per ACC/AHA guidelines.

Question 33: What is the function of the sinoatrial (SA) node?

Stimulates ventricular contraction
Connects atria to ventricles
Controls blood pressure
Acts as the heart’s pacemaker (Correct answer)

Correct answer: Acts as the heart’s pacemaker

The SA node is the heart’s natural pacemaker, initiating electrical impulses that cause the heart to beat.

Question 34: A patient undergoing percutaneous coronary intervention develops acute stent thrombosis 2 hours post-procedure. Which anticoagulation regimen failure is most likely implicated?

Failure to load with dual antiplatelet therapy before PCI (Correct answer)
Excess protamine reversal of heparin
Low-dose aspirin instead of high-dose aspirin
Inadequate heparin dosing during the procedure

Correct answer: Failure to load with dual antiplatelet therapy before PCI

Inadequate pre-procedural dual antiplatelet therapy (aspirin + P2Y12 inhibitor) is the most common cause of early stent thrombosis.

Question 35: Transesophageal echocardiography (TEE) is preferred over transthoracic echo (TTE) for evaluating:

Tricuspid regurgitation grading
Right ventricular size
Left atrial appendage thrombus (Correct answer)
Left ventricular hypertrophy

Correct answer: Left atrial appendage thrombus

TEE provides superior visualization of the left atrial appendage (LAA) because the esophagus lies directly posterior to the left atrium, eliminating chest wall and lung interference.

Question 36: In cardiac MRI, late gadolinium enhancement (LGE) is used to detect:

Myocardial fibrosis and infarct scar (Correct answer)
Valvular regurgitation severity
Coronary artery stenosis
Pericardial effusion

Correct answer: Myocardial fibrosis and infarct scar

LGE CMR identifies myocardial fibrosis and scar because gadolinium contrast accumulates in areas of damaged myocardium with expanded extracellular space.

Question 37: In the Naughton protocol, how does the workload progression differ from the Bruce protocol?

Naughton starts at a higher MET level than Bruce
Naughton uses steeper incline increases per stage
Naughton eliminates treadmill speed changes entirely
Naughton increases workload more gradually, making it suitable for deconditioned patients (Correct answer)

Correct answer: Naughton increases workload more gradually, making it suitable for deconditioned patients

The Naughton protocol uses smaller, more gradual increments in speed and grade, making it better tolerated by deconditioned or post-MI patients.

Question 38: A Holter technician notices a sudden change in heart rate from 72 bpm to 150 bpm with a narrow QRS that begins and ends abruptly. This pattern is MOST consistent with:

Sinus tachycardia with exercise
Accelerated junctional rhythm
Ventricular tachycardia with aberrancy
Paroxysmal supraventricular tachycardia (PSVT) (Correct answer)

Correct answer: Paroxysmal supraventricular tachycardia (PSVT)

PSVT characteristically has a sudden onset and termination (paroxysmal) with a narrow QRS, distinguishing it from the gradual warm-up of sinus tachycardia.

Question 39: Which color flow Doppler finding is characteristic of arteriovenous fistula (AVF) formation after femoral artery catheterization?

High-velocity, low-resistance arterialized flow in an adjacent vein (Correct answer)
Absent diastolic flow in the femoral artery
Retrograde flow in the profunda femoris artery
Diffuse color aliasing throughout the femoral vein

Correct answer: High-velocity, low-resistance arterialized flow in an adjacent vein

An AVF produces arterialized (pulsatile, high-velocity) flow in the draining vein due to direct communication between the artery and vein, with high diastolic flow in the feeding artery.

Question 40: Which condition is indicated by a prolonged QT interval on an ECG?

Atrial fibrillation
Torsades de pointes (Correct answer)
Bundle branch block
Ventricular fibrillation

Correct answer: Torsades de pointes

A prolonged QT interval can indicate an increased risk for torsades de pointes, a type of life-threatening ventricular tachycardia.

Question 41: What is the PRIMARY purpose of continuing education requirements in Peripheral Vascular Assessment for CVT professionals?

Earning additional credentials for career advancement
Networking with other professionals in the field
Maintaining current knowledge and competency as the field evolves (Correct answer)
Fulfilling mandatory regulatory requirements only

Correct answer: Maintaining current knowledge and competency as the field evolves

Continuing education in Peripheral Vascular Assessment ensures professionals maintain current knowledge and skills as standards, technologies, and best practices evolve in the Cardiovascular Technologist field.

Question 42: A technologist begins a procedure without the patient’s informed consent. What ethical principle is violated?

Veracity
Justice
Fidelity
Autonomy (Correct answer)

Correct answer: Autonomy

Autonomy is violated when patients are not allowed to make informed decisions about their own care.

Question 43: A CVT identifies that a patient has a pacemaker before performing a cardiac MRI referral. The MOST important action is to:

Ask the patient to remove the pacemaker before imaging
Perform an echocardiogram instead without notifying anyone
Notify the ordering physician and MRI team of the implanted device (Correct answer)
Proceed with the MRI using standard protocols

Correct answer: Notify the ordering physician and MRI team of the implanted device

Pacemakers are generally contraindicated in MRI environments due to risk of device interference; the care team must evaluate device compatibility before proceeding.

Question 44: Strain rate echocardiography using speckle tracking primarily measures which mechanical property of the myocardium?

Rate of myocardial deformation per unit time (Correct answer)
Intracavitary pressure gradients
Wall motion score index
Myocardial perfusion reserve

Correct answer: Rate of myocardial deformation per unit time

Strain rate reflects how quickly the myocardium deforms (shortens or lengthens) and is calculated as the spatial gradient of myocardial velocity.

Question 45: During thermodilution cardiac output measurement, which factor would cause a falsely HIGH cardiac output reading?

Tricuspid regurgitation
Injecting cold injectate too slowly (Correct answer)
Pulmonary hypertension
Atrial septal defect

Correct answer: Injecting cold injectate too slowly

Injecting the cold injectate too slowly allows it to warm before reaching the thermistor, producing a smaller temperature change and falsely elevated CO calculation.

Question 46: A patient with suspected constrictive pericarditis undergoes right and left heart catheterization. Which hemodynamic pattern confirms the diagnosis?

Elevated pulmonary artery systolic pressure > 60 mmHg
Equalization of diastolic pressures across all four chambers (Correct answer)
Elevated LVEDP with normal RVEDP
Large V-waves in the pulmonary capillary wedge trace

Correct answer: Equalization of diastolic pressures across all four chambers

Constrictive pericarditis causes equalization of end-diastolic pressures in all chambers due to external constraint by the rigid pericardium.

Question 47: Peaked, tall, symmetrical T waves in precordial leads are a classic ECG sign of:

Hyperkalemia (Correct answer)
Hypokalemia
Hyponatremia
Hypercalcemia

Correct answer: Hyperkalemia

Early hyperkalemia produces tall, narrow, peaked (tented) T waves, often first seen in precordial leads V2–V5.

Question 48: A patient has a cardiac output of 4 L/min and a body surface area of 2.0 m². What is the cardiac index?

2.0 L/min/m² (Correct answer)
8.0 L/min/m²
0.5 L/min/m²
4.0 L/min/m²

Correct answer: 2.0 L/min/m²

Cardiac index = CO / BSA = 4 / 2.0 = 2.0 L/min/m², which is at the lower limit of normal (normal: 2.2–4.0).

Question 49: Normal right ventricular systolic pressure is approximately:

5–12 mmHg
60–90 mmHg
20–30 mmHg (Correct answer)
40–60 mmHg

Correct answer: 20–30 mmHg

Normal RV systolic pressure is 20–30 mmHg, equal to pulmonary artery systolic pressure in the absence of pulmonic valve stenosis.

Question 50: Which echocardiographic parameter best distinguishes constrictive pericarditis from restrictive cardiomyopathy using tissue Doppler imaging?

Tricuspid regurgitation jet velocity
Mitral E-wave velocity
Pulmonary vein S/D ratio
Septal e' velocity (preserved or elevated in constrictive pericarditis) (Correct answer)

Correct answer: Septal e' velocity (preserved or elevated in constrictive pericarditis)

In constrictive pericarditis, the tethered pericardium constrains the lateral annulus, so septal e' is paradoxically preserved or elevated ('annulus reversus').

Question 51: Which layer of the heart is responsible for contraction?

Epicardium
Myocardium (Correct answer)
Endocardium
Pericardium

Correct answer: Myocardium

The myocardium is the thick, muscular middle layer of the heart wall responsible for contracting and pumping blood.

Question 52: How does risk management apply to daily practice in Cardiac Catheterization Procedures for Cardiovascular Technologist professionals?

Through annual safety audits exclusively
Only through responding to incidents after they occur
Through proactive identification of potential hazards and implementation of preventive measures (Correct answer)
By avoiding high-risk situations entirely

Correct answer: Through proactive identification of potential hazards and implementation of preventive measures

Effective risk management in Cardiac Catheterization Procedures requires proactive hazard identification and preventive measures, not just reactive responses. This approach reduces incidents, improves outcomes, and protects both professionals and clients.

Question 53: In a patient with suspected subclavian steal syndrome, which finding on duplex ultrasound confirms the diagnosis?

Antegrade flow in the ipsilateral vertebral artery
Increased PSV in the subclavian artery distal to the stenosis
Monophasic flow in the contralateral vertebral artery
Retrograde or bidirectional flow in the ipsilateral vertebral artery (Correct answer)

Correct answer: Retrograde or bidirectional flow in the ipsilateral vertebral artery

Subclavian steal syndrome is confirmed by retrograde or bidirectional (to-and-fro) flow in the vertebral artery ipsilateral to the subclavian stenosis or occlusion.

Question 54: Which maneuver can help differentiate sinus tachycardia from AVNRT during ECG recording?

Both B and C (Correct answer)
Deep inspiration
Valsalva maneuver
Carotid sinus massage

Correct answer: Both B and C

Both carotid sinus massage and Valsalva maneuver increase vagal tone, which may abruptly terminate AVNRT or transiently slow sinus tachycardia.

Question 55: During right heart catheterization using a balloon-tipped flotation catheter, the balloon ruptures in the right ventricle. What is the most appropriate next action?

Inflate the balloon with saline instead of air
Continue advancing the catheter using fluoroscopic guidance
Inject contrast to confirm catheter position
Withdraw the catheter and replace it with a new one (Correct answer)

Correct answer: Withdraw the catheter and replace it with a new one

A ruptured balloon cannot safely float into the pulmonary artery and risks air embolism; the catheter must be withdrawn and replaced.

Question 56: What is the primary purpose of the post-ventricular atrial refractory period (PVARP) in a dual-chamber pacemaker?

To prevent atrial pacing during the ventricular vulnerable period
To allow tracking of rapid atrial rates
To extend the AV delay after ventricular pacing
To prevent sensing of far-field R-waves on the atrial channel (Correct answer)

Correct answer: To prevent sensing of far-field R-waves on the atrial channel

PVARP prevents the atrial channel from sensing the ventricular event or its far-field signal, thereby avoiding pacemaker-mediated tachycardia and inappropriate tracking.

Question 57: What is the normal range for the AH interval in an EP study?

10–30 ms
200–300 ms
55–125 ms (Correct answer)
150–200 ms

Correct answer: 55–125 ms

The AH interval (atrial-to-His, representing AV nodal conduction) normally measures 55–125 ms and prolongates with vagal tone or AV nodal disease.

Question 58: During coronary angiography, the LAD is found to supply both the anterior wall and the inferior wall of the left ventricle. This pattern is called a:

Wrap-around LAD (Correct answer)
Left dominant system
Right dominant system
Codominant system

Correct answer: Wrap-around LAD

A wrap-around LAD extends past the cardiac apex to supply the inferior wall, which is normally supplied by the RCA.

Question 59: A patient undergoes lower extremity venous mapping for bypass surgery. Which vein is preferred as a conduit and what minimum diameter is generally required?

Femoral vein; minimum 4 mm
Great saphenous vein; minimum 3 mm (Correct answer)
Basilic vein; minimum 2 mm
Small saphenous vein; minimum 2 mm

Correct answer: Great saphenous vein; minimum 3 mm

The great saphenous vein is the preferred bypass conduit, and a minimum diameter of 3 mm is generally required for adequate long-term graft patency.

Question 60: During balloon aortic valvuloplasty, rapid ventricular pacing at 180-200 bpm is used. What is the primary purpose of this pacing?

To minimize cardiac output and stabilize the balloon during inflation (Correct answer)
To prevent vasovagal reactions during balloon inflation
To treat procedure-induced ventricular arrhythmias
To increase coronary perfusion pressure

Correct answer: To minimize cardiac output and stabilize the balloon during inflation

Rapid pacing reduces stroke volume and cardiac output, keeping the balloon stable and preventing it from being ejected during inflation.

Question 61: During a diagnostic catheterization, the operator notes that left ventricular end-diastolic pressure (LVEDP) is 28 mmHg. Which clinical condition does this most strongly suggest?

Mitral valve prolapse
Left ventricular diastolic dysfunction or heart failure (Correct answer)
Constrictive pericarditis
Aortic stenosis with preserved function

Correct answer: Left ventricular diastolic dysfunction or heart failure

An LVEDP above 18-20 mmHg indicates elevated filling pressure consistent with left ventricular diastolic dysfunction or heart failure.

Question 62: During a lower extremity venous reflux study, augmentation is performed. What does the absence of augmentation in a vein segment most likely indicate?

Acute thrombosis obstructing the vein segment (Correct answer)
Chronic venous insufficiency
Arteriovenous fistula
Normal venous competence

Correct answer: Acute thrombosis obstructing the vein segment

Absent augmentation during distal compression suggests that thrombus is obstructing venous flow through the segment, preventing the normal flow augmentation response.

Question 63: Which ECG pattern is seen in Brugada syndrome?

Epsilon wave in V1-V3
ST depression in inferior leads
Tall R wave in V1 with right axis deviation
ST elevation in V1-V3 with coved morphology (Correct answer)

Correct answer: ST elevation in V1-V3 with coved morphology

Brugada syndrome shows a coved-type ST elevation (≥2 mm) in right precordial leads V1-V3, associated with risk of sudden cardiac death.

Question 64: Which formula is used to calculate cardiac output using Doppler echocardiography?

CO = Heart rate × Left ventricular end-diastolic volume
CO = (Mean gradient / 4) × Heart rate
CO = Stroke volume / Ejection fraction
CO = LVOT area × LVOT VTI × Heart rate (Correct answer)

Correct answer: CO = LVOT area × LVOT VTI × Heart rate

Cardiac output = LVOT cross-sectional area × left ventricular outflow tract velocity-time integral × heart rate.

Question 65: A patient undergoing cardiac catheterization develops a sudden onset of hives, bronchospasm, and hypotension after contrast injection. What is the first-line treatment?

IV normal saline bolus 1 liter
Epinephrine 0.3 mg IM or IV (Correct answer)
IV diphenhydramine 50 mg
IV methylprednisolone 125 mg

Correct answer: Epinephrine 0.3 mg IM or IV

Epinephrine is the first-line treatment for anaphylaxis because it reverses bronchospasm, vasodilation, and urticaria simultaneously.

Question 66: What is the normal duration threshold for pathologic venous reflux in the great saphenous vein?

Greater than 3.0 seconds
Greater than 1.0 second
Greater than 0.5 seconds (Correct answer)
Greater than 2.0 seconds

Correct answer: Greater than 0.5 seconds

Reflux duration exceeding 0.5 seconds in the great saphenous vein is considered pathologic and indicative of valvular incompetence.

Question 67: Which symptom endpoint during stress testing would be classified as angina equivalent rather than typical angina?

Left arm heaviness with diaphoresis
Jaw tightness and shortness of breath without chest pain (Correct answer)
Burning sensation in the mid-chest
Substernal chest pressure radiating to the left arm

Correct answer: Jaw tightness and shortness of breath without chest pain

Angina equivalents are ischemic symptoms that occur without classic chest pain, such as jaw pain, exertional dyspnea, or arm heaviness, and carry the same clinical significance.

Question 68: A patient's pulmonary capillary wedge pressure (PCWP) is 22 mmHg. This finding most likely indicates:

Hypovolemia
Pulmonary embolism
Left ventricular failure (Correct answer)
Right ventricular failure

Correct answer: Left ventricular failure

An elevated PCWP above 18 mmHg reflects increased left atrial pressure, indicating left ventricular failure or fluid overload.

Question 69: The interventricular septum is anatomically and functionally part of which ventricle?

Neither ventricle
Right ventricle
Left ventricle (Correct answer)
Both equally

Correct answer: Left ventricle

The interventricular septum is developmentally and functionally considered part of the left ventricle.

Question 70: During a lower extremity venous exam, which maneuver best evaluates for popliteal vein reflux?

Trendelenburg positioning
Valsalva maneuver
Distal calf compression and release with patient standing (Correct answer)
Proximal thigh compression

Correct answer: Distal calf compression and release with patient standing

Distal calf augmentation followed by sudden release, performed with the patient standing or in reverse Trendelenburg, produces retrograde flow that reveals popliteal valve incompetence.

Question 71: Which catheter is specifically designed for selective engagement of the right coronary artery via the femoral approach?

Judkins Left 4 catheter
Pigtail catheter
Swan-Ganz catheter
Amplatz Right catheter (Correct answer)

Correct answer: Amplatz Right catheter

The Amplatz Right catheter (or Judkins Right) is designed to selectively engage the right coronary ostium from the femoral approach.

Question 72: What is the PRIMARY purpose of continuing education requirements in Stress Testing Protocols for CVT professionals?

Fulfilling mandatory regulatory requirements only
Earning additional credentials for career advancement
Networking with other professionals in the field
Maintaining current knowledge and competency as the field evolves (Correct answer)

Correct answer: Maintaining current knowledge and competency as the field evolves

Continuing education in Stress Testing Protocols ensures professionals maintain current knowledge and skills as standards, technologies, and best practices evolve in the Cardiovascular Technologist field.

Question 73: Which radiation protection measure is most effective at reducing scatter radiation exposure to the cardiac catheterization team?

Keeping the image intensifier as far from the patient as possible
Using the highest frame rate possible
Increasing the distance from the X-ray source (Correct answer)
Wearing a thyroid collar only

Correct answer: Increasing the distance from the X-ray source

Radiation exposure follows the inverse square law — doubling distance from the source reduces exposure by 75%.

Question 74: Which protocol element is essential when performing a surveillance duplex scan of an endovascular aortic aneurysm repair (EVAR)?

Assessment for endoleak, aneurysm sac size, and graft patency (Correct answer)
Measurement of renal artery velocities exclusively
Evaluation of the iliac limb diameters only
Evaluation of mesenteric flow patterns only

Correct answer: Assessment for endoleak, aneurysm sac size, and graft patency

EVAR surveillance requires systematic assessment for endoleak (blood flow outside the graft within the sac), sac size change, and graft limb patency to detect complications.

Question 75: When recording a 12-lead ECG, baseline wander artifact is most effectively reduced by:

Ensuring the patient is relaxed and breathes normally (Correct answer)
Repositioning electrodes to bony prominences
Increasing the high-pass filter to 0.5 Hz
Applying electrode gel more liberally

Correct answer: Ensuring the patient is relaxed and breathes normally

Baseline wander is most often caused by patient movement or irregular breathing; having the patient lie still and breathe normally is the first corrective step.

Question 76: During an echocardiogram, a patient discloses they are experiencing suicidal thoughts. The CVT is ethically and legally obligated to:

Maintain confidentiality and not disclose the information
Document it in the report and complete the study
Ask the patient to contact a crisis hotline after the procedure
Immediately report the disclosure to the supervising provider (Correct answer)

Correct answer: Immediately report the disclosure to the supervising provider

Disclosure of suicidal ideation constitutes an imminent safety risk that overrides standard patient confidentiality and requires immediate escalation.

Question 77: The J point on an ECG is defined as:

The nadir of the S wave
The junction between the end of the QRS and the beginning of the ST segment (Correct answer)
The peak of the T wave
The beginning of the P wave

Correct answer: The junction between the end of the QRS and the beginning of the ST segment

The J point marks the exact junction where the QRS complex ends and the ST segment begins, used as the reference for measuring ST changes.

Question 78: Which structure separates the left and right atria in the adult heart?

Moderator band
Crista terminalis
Interventricular septum
Interatrial septum (Correct answer)

Correct answer: Interatrial septum

The interatrial septum divides the left and right atria; the fossa ovalis is a depression on its right side representing the closed foramen ovale.

Question 79: Which lead configuration provides a view of the heart’s electrical activity in the frontal plane?

Einthoven’s triangle
Standard limb and augmented leads (Correct answer)
Chest leads only
Precordial leads

Correct answer: Standard limb and augmented leads

The standard limb leads (I, II, and III) and augmented leads (aVR, aVL, aVF) provide views of the heart's electrical activity in the frontal plane.

Question 80: A 68-year-old patient on metformin is scheduled for coronary angiography with contrast. What is the standard recommendation regarding metformin use?

Continue metformin without interruption
Administer sodium bicarbonate IV to prevent interaction
Switch to insulin 24 hours before the procedure
Hold metformin 48 hours post-procedure due to risk of lactic acidosis (Correct answer)

Correct answer: Hold metformin 48 hours post-procedure due to risk of lactic acidosis

Contrast-induced nephropathy can impair metformin excretion, causing dangerous lactic acid accumulation, so metformin is held 48 hours post-procedure.

Question 81: Which of the following BEST describes the concept of nonmaleficence in the context of cardiovascular technology?

Avoiding unnecessary radiation exposure or contrast when not clinically indicated (Correct answer)
Ensuring all patients have equal access to echocardiography services
Disclosing all potential risks of a procedure to the patient
Respecting a patient's decision to discontinue treatment

Correct answer: Avoiding unnecessary radiation exposure or contrast when not clinically indicated

Nonmaleficence means 'do no harm,' applied in CVT by minimizing unnecessary exposure to radiation, contrast, or invasive procedures.

Question 82: Which radiation safety principle states that radiation exposure should be kept as low as reasonably achievable?

OSHA
HIPAA
ALARA (Correct answer)
NCRP

Correct answer: ALARA

ALARA (As Low As Reasonably Achievable) is the guiding radiation protection principle applied in fluoroscopy and nuclear cardiology.

Question 83: During a left heart catheterization, which valve must the catheter cross to enter the left ventricle when using the retrograde approach?

Tricuspid valve
Mitral valve
Aortic valve (Correct answer)
Pulmonic valve

Correct answer: Aortic valve

The retrograde approach enters the femoral artery, travels up the aorta, and crosses the aortic valve to reach the left ventricle.

Question 84: A patient with a transvenous ICD develops recurrent inappropriate shocks due to atrial fibrillation with rapid ventricular response. Which programming change is most appropriate?

Enable 'all therapies off' mode
Increase the VT/VF detection interval (number of intervals to detect) (Correct answer)
Shorten the ventricular refractory period
Decrease the VF detection rate

Correct answer: Increase the VT/VF detection interval (number of intervals to detect)

Increasing the number of intervals required to confirm tachycardia (NID) reduces inappropriate therapy by allowing time for spontaneous AF rate slowing or discrimination algorithms to operate.

Question 85: Atropine increases heart rate by:

Inhibiting the sinoatrial node
Increasing vagal tone
Blocking muscarinic acetylcholine receptors (Correct answer)
Stimulating beta-1 adrenergic receptors

Correct answer: Blocking muscarinic acetylcholine receptors

Atropine is an anticholinergic agent that blocks vagal (muscarinic) influence on the SA node, allowing intrinsic automaticity to increase heart rate.

Question 86: What is the significance of the 'elective replacement indicator' (ERI) on a pacemaker or ICD?

The device has permanently switched to backup pacing mode
The device has experienced a shock coil fracture
Battery voltage has reached a level indicating 3–6 months of remaining longevity (Correct answer)
A lead impedance alarm has been triggered

Correct answer: Battery voltage has reached a level indicating 3–6 months of remaining longevity

ERI signals that the device battery has reached the point where generator replacement should be scheduled, typically providing 3–6 months of continued function before the end-of-life (EOL) point.

Question 87: During ventriculography, the technologist observes an hourglass appearance of the left ventricle. This finding is associated with which condition?

Dilated cardiomyopathy
Hypertrophic obstructive cardiomyopathy (HOCM) (Correct answer)
Cardiac tamponade
Constrictive pericarditis

Correct answer: Hypertrophic obstructive cardiomyopathy (HOCM)

HOCM causes dynamic mid-cavity obstruction that produces an hourglass or figure-8 appearance during systole on ventriculography.

Question 88: Which pressure waveform abnormality on right heart catheterization indicates severe tricuspid regurgitation?

Giant V-waves in right atrial pressure trace (Correct answer)
Cannon A-waves
Blunted X-descent
Prominent A-wave in right atrium

Correct answer: Giant V-waves in right atrial pressure trace

Severe tricuspid regurgitation causes large V-waves in the right atrial pressure trace due to systolic backflow into the atrium.

Question 89: The SYNTAX score is used in the context of cardiac imaging to:

Classify pericardial disease severity
Grade aortic stenosis severity
Measure left ventricular diastolic dysfunction
Quantify the complexity of coronary artery disease for revascularization planning (Correct answer)

Correct answer: Quantify the complexity of coronary artery disease for revascularization planning

The SYNTAX score grades the anatomic complexity of coronary artery disease from angiography or CCTA to guide decisions between PCI and CABG revascularization strategies.

Question 90: During a Holter monitor hook-up, the patient mentions they are pregnant. The CVT should:

Apply only two leads instead of the standard lead count
Proceed normally because Holter monitoring poses no radiation risk (Correct answer)
Postpone the test until after delivery
Obtain physician approval before applying the monitor

Correct answer: Proceed normally because Holter monitoring poses no radiation risk

Holter monitoring is non-ionizing and safe during pregnancy; no radiation is involved, so the test may proceed without modification.

Question 91: Which ethical principle involves telling the patient the truth about their condition?

Nonmaleficence
Veracity (Correct answer)
Beneficence
Fidelity

Correct answer: Veracity

Veracity is the ethical duty to be honest with patients and provide accurate information about their care.

Question 92: A patient undergoing a stress echocardiogram develops ST-segment depression and complains of chest pain. What is the FIRST action the CVT should take?

Notify the supervising physician immediately (Correct answer)
Increase the treadmill speed to complete the protocol
Administer sublingual nitroglycerin
Document the findings and continue the test

Correct answer: Notify the supervising physician immediately

ST depression with chest pain during stress testing is a primary endpoint requiring immediate physician notification and test termination.

Question 93: Which ECG finding is most characteristic of Wolff-Parkinson-White (WPW) syndrome?

Tall peaked P waves
Prolonged QT interval
Widened QRS with left axis deviation
Delta wave with short PR interval (Correct answer)

Correct answer: Delta wave with short PR interval

WPW is characterized by a delta wave (slurred QRS upstroke) and a short PR interval (<120 ms) due to an accessory pathway bypassing the AV node.

Question 94: When performing a toe-brachial index (TBI), a value below which threshold indicates significant digital ischemia?

0.6 (Correct answer)
0.9
0.7
0.4

Correct answer: 0.6

A TBI below 0.6 is considered abnormal and indicates significant digital ischemia; below 0.15 suggests critical ischemia at the digital level.

Question 95: A CVT should verify patient identity before any procedure by:

Confirming with the transporting staff member verbally
Asking the patient to state their name only
Checking only the room number on the order
Using at least two patient identifiers such as name and date of birth (Correct answer)

Correct answer: Using at least two patient identifiers such as name and date of birth

The Joint Commission requires a minimum of two patient identifiers (e.g., name and date of birth) to prevent wrong-patient errors.

Question 96: Which valve prevents backflow of blood from the aorta into the left ventricle?

Aortic valve (Correct answer)
Pulmonic valve
Mitral valve
Tricuspid valve

Correct answer: Aortic valve

The aortic valve closes during diastole to prevent regurgitation of blood from the aorta back into the left ventricle.

Question 97: When a PA catheter is in the correct wedge position, the waveform should resemble which pressure tracing?

Pulmonary artery pressure with dicrotic notch
Left atrial pressure with 'a' and 'v' waves (Correct answer)
Right ventricular pressure with rapid upstroke
Aortic pressure with wide pulse pressure

Correct answer: Left atrial pressure with 'a' and 'v' waves

In the wedge position, the inflated balloon occludes forward flow, allowing the distal tip to sense static left atrial pressure with characteristic 'a' and 'v' waves.

Question 98: A patient's SvO₂ suddenly drops from 70% to 48%. Which condition should be suspected FIRST?

Decreased cardiac output (Correct answer)
Pulmonary embolism causing V/Q mismatch
Increased FiO₂
Catheter tip in wedge position

Correct answer: Decreased cardiac output

A sudden SvO₂ drop most commonly indicates reduced cardiac output, causing tissues to extract more oxygen from a diminished supply.

Question 99: A patient's ECG shows a delta wave and short PR interval. Which condition does this suggest?

Long QT syndrome
Wolff-Parkinson-White syndrome (Correct answer)
Brugada syndrome
Left bundle branch block

Correct answer: Wolff-Parkinson-White syndrome

WPW syndrome is characterized by a delta wave (slurred QRS upstroke) and shortened PR interval due to an accessory conduction pathway.

Question 100: What is the recommended minimum duration for the post-stress ECG monitoring period?

At least 6–8 minutes or until abnormalities resolve (Correct answer)
1 minute
3 minutes
15 minutes

Correct answer: At least 6–8 minutes or until abnormalities resolve

Post-exercise monitoring should continue for at least 6–8 minutes or until ECG changes and symptoms fully resolve, as late findings are diagnostically important.

Question 101: Which complication is best detected by performing an Allen test prior to radial artery access?

Inadequate ulnar collateral circulation (Correct answer)
Radial artery spasm
Arteriovenous fistula formation
Radial artery thrombosis

Correct answer: Inadequate ulnar collateral circulation

The Allen test evaluates ulnar collateral flow to ensure the hand will be adequately perfused if the radial artery is occluded.

Question 102: The Duke Treadmill Score incorporates which three variables for risk stratification?

Peak heart rate, blood pressure, and MET level
Exercise time, ST deviation, and angina index (Correct answer)
Age, sex, and resting ECG
Ejection fraction, wall motion score, and symptoms

Correct answer: Exercise time, ST deviation, and angina index

The Duke Treadmill Score = exercise time – (5 × ST deviation) – (4 × angina index), stratifying patients into low, intermediate, or high-risk categories.

Question 103: What does the term 'aliasing' refer to in pulsed-wave Doppler echocardiography?

Underestimation of velocity when it exceeds the Nyquist limit (Correct answer)
Overestimation of velocity due to beam angulation
Signal dropout due to poor acoustic windows
Ghost images from side lobe artifacts

Correct answer: Underestimation of velocity when it exceeds the Nyquist limit

Aliasing occurs when blood velocity exceeds the Nyquist limit (half the pulse repetition frequency), causing the signal to wrap around and appear in the opposite direction.

Question 104: Which lead is typically used for rhythm monitoring in continuous ECG telemetry?

Lead V1
Lead II (Correct answer)
Lead I
Lead III

Correct answer: Lead II

Lead II is commonly used in telemetry because it provides a clear view of the P wave, QRS complex, and T wave.

Question 105: The right coronary artery most commonly supplies which structure responsible for the AV node?

Left anterior descending artery
Right coronary artery (Correct answer)
Circumflex artery
Obtuse marginal artery

Correct answer: Right coronary artery

The AV node is supplied by the AV nodal artery, which arises from the right coronary artery in ~90% of individuals.

Question 106: A CVT is assisting with a diagnostic catheterization and notices the pressure waveform transitions from a ventricular pattern to a pulmonary artery waveform without fluoroscopy confirmation. What should the technologist do next?

Inject contrast immediately to confirm position
Continue advancing to achieve wedge position
Withdraw the catheter to the right atrium and restart
Confirm catheter position with fluoroscopy before proceeding (Correct answer)

Correct answer: Confirm catheter position with fluoroscopy before proceeding

Catheter position should always be confirmed fluoroscopically when waveform changes are ambiguous to prevent perforation or misplacement complications.

Question 107: A patient's ICD log shows multiple 'committed shocks' delivered during sinus tachycardia. Which programming feature, if enabled, could have prevented these shocks?

Morphology discrimination (EGM width)
Onset criterion (sudden onset) (Correct answer)
Rate stability criterion
AV dissociation detection

Correct answer: Onset criterion (sudden onset)

The sudden onset criterion distinguishes VT (abrupt onset) from sinus tachycardia (gradual onset), withholding therapy when the ventricular rate increases gradually as seen in exercise-induced sinus tachycardia.

Question 108: What is the primary purpose of an electrophysiology (EP) study?

To map electrical pathways and identify arrhythmia mechanisms (Correct answer)
To assess coronary artery anatomy
To evaluate valvular function
To measure cardiac output during exercise

Correct answer: To map electrical pathways and identify arrhythmia mechanisms

EP studies use intracardiac catheters to map electrical conduction and identify the origin and mechanism of arrhythmias.

Question 109: Which hemodynamic finding is characteristic of severe mitral stenosis on cardiac catheterization?

Equalization of diastolic pressures in all chambers
Elevated mean pulmonary capillary wedge pressure with a diastolic gradient (Correct answer)
Elevated left ventricular end-diastolic pressure
Large V-waves in the pulmonary capillary wedge trace

Correct answer: Elevated mean pulmonary capillary wedge pressure with a diastolic gradient

Severe mitral stenosis produces an elevated mean PCWP with a pressure gradient between PCWP and left ventricular diastolic pressure.

Question 110: Which standard of practice is MOST important for ensuring quality in ECG Interpretation & Analysis?

Minimizing documentation to focus on practical work
Using the most advanced technology available regardless of need
Strictly adhering to the same procedure in every situation
Following evidence-based protocols while adapting to specific circumstances (Correct answer)

Correct answer: Following evidence-based protocols while adapting to specific circumstances

Question 111: What is the primary pacemaker of the heart?

Bundle of His
SA node (Correct answer)
AV node
Purkinje fibers

Correct answer: SA node

The sinoatrial (SA) node spontaneously depolarizes at the highest rate and sets the heart's rhythm.

Question 112: Normal mixed venous oxygen saturation (SvO₂) is approximately:

60–75% (Correct answer)
95–100%
80–90%
40–55%

Correct answer: 60–75%

Normal SvO₂ from the pulmonary artery is 60–75%, reflecting the balance between oxygen delivery and consumption by peripheral tissues.

Question 113: A patient refuses a recommended echocardiogram despite understanding the risks of refusal. The CVT should:

Explain the risks again until the patient agrees
Contact the patient's family to override the refusal
Proceed with the study because the physician ordered it
Document the refusal and respect the patient's decision (Correct answer)

Correct answer: Document the refusal and respect the patient's decision

Competent adults have the right to refuse medical treatment; the refusal should be documented and the care team notified.

Question 114: The coronary sinus drains deoxygenated blood from the myocardium into which chamber?

Left atrium
Left ventricle
Right atrium (Correct answer)
Right ventricle

Correct answer: Right atrium

The coronary sinus empties venous blood from the myocardium into the right atrium.

Question 115: When performing a subcostal echocardiographic view, which structure is best visualized to assess for pericardial effusion?

Descending thoracic aorta
Mitral valve leaflets
Left ventricular apex
Posterior pericardium adjacent to the right ventricle (Correct answer)

Correct answer: Posterior pericardium adjacent to the right ventricle

The subcostal view provides an excellent window to assess effusion posterior to the right ventricle and around the cardiac apex.

Question 116: Which diuretic is most commonly used in heart failure management and acts primarily on the loop of Henle?

Furosemide (Correct answer)
Spironolactone
Hydrochlorothiazide
Acetazolamide

Correct answer: Furosemide

Furosemide (Lasix) is a loop diuretic that inhibits the Na-K-2Cl cotransporter in the ascending loop of Henle, producing potent diuresis to reduce volume overload.

Question 117: During a venous duplex exam, a non-compressible femoral vein with absence of phasicity most likely indicates:

Acute deep vein thrombosis (Correct answer)
Normal venous anatomy
External compression from lymphadenopathy
Chronic venous insufficiency

Correct answer: Acute deep vein thrombosis

Acute DVT causes the vein to become non-compressible and loses the normal phasic respiratory variation due to intraluminal thrombus.

Question 118: Which pacemaker parameter defines the minimum interval between a sensed or paced event and the next pacing output?

Refractory period (Correct answer)
Upper rate limit
Lower rate limit
AV delay

Correct answer: Refractory period

The refractory period prevents the pacemaker from responding to signals (such as T-waves) immediately after a paced or sensed event.

Question 119: What does a high-resistance waveform typically indicate?

Turbulent flow
Continuous flow
Supply to muscular arteries (Correct answer)
Supply to low-resistance organs

Correct answer: Supply to muscular arteries

High-resistance waveforms are characteristic of arteries supplying muscles or organs with intermittent demand.

Question 120: Which fall prevention strategy is MOST appropriate for a post-procedural cardiac catheterization patient?

Remove monitoring equipment promptly to allow freedom of movement
Allow the patient to stand unassisted once pain is controlled
Keep bed rails up, call light within reach, and assist with ambulation (Correct answer)
Encourage the patient to ambulate independently to restore strength

Correct answer: Keep bed rails up, call light within reach, and assist with ambulation

Post-catheterization patients are at high fall risk due to sedation and arterial access site precautions; side rails, call lights, and assisted ambulation are standard safety measures.

Question 121: What is the significance of a fractional flow reserve (FFR) value of 0.75 in a coronary stenosis?

The lesion is borderline and medical management is preferred
The measurement is invalid and must be repeated
The lesion is hemodynamically significant and warrants revascularization (Correct answer)
The lesion is non-significant and stenting is not indicated

Correct answer: The lesion is hemodynamically significant and warrants revascularization

An FFR ≤0.80 (commonly cutoff 0.75-0.80) indicates a hemodynamically significant lesion that benefits from revascularization.

Question 122: In stress echocardiography, a new wall motion abnormality induced during exercise is most consistent with which diagnosis?

Dilated cardiomyopathy
Pulmonary hypertension
Normal physiologic response to exercise
Myocardial ischemia in the territory of the abnormal segment (Correct answer)

Correct answer: Myocardial ischemia in the territory of the abnormal segment

New or worsening regional wall motion abnormality during stress indicates inducible ischemia in the corresponding coronary artery territory.

Question 123: A patient in the cardiac catheterization lab reports an allergy to iodine. What is the PRIORITY concern for the CVT and care team?

Rescheduling the procedure for an MRI instead
Substituting the saline flush with a non-iodine solution
Documenting the allergy and proceeding without contrast
Alerting the physician because contrast dye is iodine-based (Correct answer)

Correct answer: Alerting the physician because contrast dye is iodine-based

Iodine-based contrast agents are routinely used in cardiac catheterization; the physician must be alerted to consider premedication or alternative imaging.

Question 124: Amiodarone is classified as which type of antiarrhythmic drug?

Class IV
Class I
Class II
Class III (Correct answer)

Correct answer: Class III

Amiodarone is a Class III antiarrhythmic that primarily blocks potassium channels, prolonging the action potential duration and effective refractory period.

Question 125: Which finding on PA catheter pullback tracing confirms the catheter tip has entered the right ventricle?

Gradual rise in both systolic and diastolic pressures
Loss of pulsatility and flat waveform
Appearance of 'a' and 'v' waves
Sudden appearance of a high systolic pressure with a low diastolic pressure near zero (Correct answer)

Correct answer: Sudden appearance of a high systolic pressure with a low diastolic pressure near zero

Entry into the right ventricle is confirmed by a waveform with elevated systolic pressure (matching PA systolic) but near-zero diastolic pressure, unlike the PA which has a diastolic floor.

Question 126: In Cardiac Catheterization Procedures, what is the FIRST step a CVT professional should take when encountering a new case or situation?

Consult with a supervisor before taking any action
Implement an immediate solution based on past experience
Document the situation and wait for further instructions
Conduct a comprehensive assessment and gather all relevant information (Correct answer)

Correct answer: Conduct a comprehensive assessment and gather all relevant information

In Cardiac Catheterization Procedures, a thorough initial assessment ensures all relevant factors are identified before deciding on an appropriate course of action. This systematic approach is fundamental to Cardiovascular Technologist practice.

Question 127: The moderator band (septomarginal trabecula) is a muscular structure found in which chamber?

Right atrium
Left atrium
Left ventricle
Right ventricle (Correct answer)

Correct answer: Right ventricle

The moderator band crosses the right ventricular cavity and carries part of the right bundle branch to the anterior papillary muscle.

Question 128: Which nuclear cardiology imaging modality offers superior sensitivity and specificity for CAD detection compared to SPECT?

Cardiac PET perfusion imaging (Correct answer)
Technetium pyrophosphate scan
Planar thallium scintigraphy
MUGA scan

Correct answer: Cardiac PET perfusion imaging

Cardiac PET perfusion imaging provides higher sensitivity (~90%) and specificity (~85%) for CAD detection than SPECT, partly due to higher spatial resolution and attenuation correction.

Question 129: A patient with an atrial septal defect undergoes right heart catheterization. At which location would the technologist expect to find a step-up in oxygen saturation?

Right ventricle to pulmonary artery
Superior vena cava to right atrium (Correct answer)
Pulmonary artery to pulmonary capillary wedge
Right atrium to right ventricle

Correct answer: Superior vena cava to right atrium

An ASD causes left-to-right shunting at the atrial level, producing an oxygen saturation step-up from the SVC to the right atrium.

Question 130: Which standard of practice is MOST important for ensuring quality in Peripheral Vascular Assessment?

Strictly adhering to the same procedure in every situation
Using the most advanced technology available regardless of need
Minimizing documentation to focus on practical work
Following evidence-based protocols while adapting to specific circumstances (Correct answer)

Correct answer: Following evidence-based protocols while adapting to specific circumstances

Question 131: The hepatic artery resistive index (RI) is elevated above 0.8 in a liver transplant patient. This finding is most consistent with:

Hepatic artery thrombosis
Portal vein thrombosis
Normal post-transplant hepatic flow
Hepatic artery stenosis with elevated downstream resistance (Correct answer)

Correct answer: Hepatic artery stenosis with elevated downstream resistance

An elevated RI in the hepatic artery post-transplant suggests increased downstream vascular resistance, often due to hepatic artery stenosis or rejection.

Question 132: Thrombolytics (e.g., tPA) are used in acute STEMI to:

Dissolve existing thrombus by activating plasminogen (Correct answer)
Reduce afterload via vasodilation
Prevent platelet aggregation permanently
Block AV node conduction

Correct answer: Dissolve existing thrombus by activating plasminogen

Thrombolytics convert plasminogen to plasmin, which degrades fibrin clots, restoring coronary blood flow when primary PCI is not available within the recommended time window.

Question 133: Typical (common) atrial flutter is a macroreentrant circuit that travels around the tricuspid annulus; the critical slow-conduction zone targeted for ablation is the:

Bachmann's bundle
Crista terminalis
Mitral isthmus
Cavotricuspid isthmus (CTI) (Correct answer)

Correct answer: Cavotricuspid isthmus (CTI)

The cavotricuspid isthmus (between the tricuspid annulus and the inferior vena cava) is the narrow slow-conduction zone required for typical flutter; a line of block across it cures the arrhythmia.

Question 134: A patient returns a Holter monitor with significant baseline wander throughout the recording. What is the MOST likely cause?

Incorrect lead placement order
Loose or poorly prepared electrode sites (Correct answer)
Low battery in the recorder
Patient sleeping on the recorder

Correct answer: Loose or poorly prepared electrode sites

Baseline wander is most commonly caused by poor electrode-skin contact due to inadequate skin preparation or loose electrodes.

Question 135: A patient on a beta-blocker achieves only 75% of MPHR but develops 2 mm horizontal ST depression with typical angina. The stress test result should be interpreted as:

Positive for ischemia despite submaximal effort (Correct answer)
Borderline requiring repeat testing off medication
Inconclusive due to submaximal heart rate
Negative because MPHR threshold was not reached

Correct answer: Positive for ischemia despite submaximal effort

Significant ST depression (≥1 mm) with typical anginal symptoms constitutes a positive test even if the 85% MPHR target was not achieved.

Question 136: A CRT device shows less than 98% biventricular pacing on follow-up. What is the most appropriate first intervention?

Increase lower rate limit above the patient's intrinsic rate
Upgrade to a subcutaneous ICD
Optimize AV delay and manage causes of native conduction (e.g., AF) (Correct answer)
Replace the left ventricular lead

Correct answer: Optimize AV delay and manage causes of native conduction (e.g., AF)

Maximizing biventricular pacing percentage—by programming AV delay shorter than intrinsic PR and treating AF that competes with pacing—is the first step before hardware revision.

Question 137: A patient presents with a narrow-complex tachycardia at 150 bpm. P waves are hidden within the T waves. The most likely diagnosis is:

Sinus tachycardia
Accelerated junctional rhythm
Ventricular tachycardia
Atrial flutter with 2:1 block (Correct answer)

Correct answer: Atrial flutter with 2:1 block

Atrial flutter typically presents at 150 bpm with 2:1 AV block, causing flutter waves to be partially buried in T waves.

Question 138: What does LVEF stand for and what is the normal range in adults?

Left Ventricular End-diastolic Function; normal ≥45%
Left Ventricular Ejection Fraction; normal ≥55% (Correct answer)
Left Ventricular Ejection Fraction; normal ≥35%
Left Ventricular Effort Factor; normal ≥65%

Correct answer: Left Ventricular Ejection Fraction; normal ≥55%

LVEF (Left Ventricular Ejection Fraction) is the percentage of blood ejected with each beat; a normal LVEF is ≥55%, indicating preserved systolic function.

Question 139: To assess the severity of aortic regurgitation during catheterization, the technologist performs an aortogram. Which injection site is used?

Pulmonary artery
Aortic root just above the aortic valve (Correct answer)
Left ventricle apex
Left main coronary ostium

Correct answer: Aortic root just above the aortic valve

Contrast injected in the aortic root just above the valve regurgitates into the left ventricle, allowing grading of aortic regurgitation severity.

Question 140: Which electrogram (EGM) characteristic best distinguishes supraventricular tachycardia (SVT) from VT in a dual-chamber ICD?

Atrial rate equal to or faster than ventricular rate with 1:1 AV relationship at onset (Correct answer)
Presence of retrograde P-waves only
Ventricular EGM width narrower than 120 ms
Atrial rate slower than ventricular rate

Correct answer: Atrial rate equal to or faster than ventricular rate with 1:1 AV relationship at onset

When the atrial rate meets or exceeds the ventricular rate with a 1:1 relationship, SVT is favored; VT typically shows VA dissociation or slower atrial rate than ventricular rate.

Question 141: The Gorlin formula is used during cardiac catheterization to calculate which measurement?

Cardiac output by thermodilution
Valve orifice area (Correct answer)
Coronary flow reserve
Systemic vascular resistance

Correct answer: Valve orifice area

The Gorlin formula uses flow and pressure gradient across a valve to calculate valve orifice area.

Question 142: What does a deceleration time (DT) of less than 150 ms on mitral inflow Doppler indicate in the clinical context of diastolic dysfunction?

Pseudonormal filling pattern
Impaired relaxation pattern
Restrictive filling pattern with elevated filling pressures (Correct answer)
Normal diastolic relaxation

Correct answer: Restrictive filling pattern with elevated filling pressures

A shortened deceleration time < 150 ms reflects rapid equalization of LA-LV pressures, characteristic of a restrictive filling pattern indicating severely elevated filling pressures.

Question 143: A patient post-cardiac surgery has a CO of 2.1 L/min, CI of 1.1 L/min/m², and PCWP of 20 mmHg. These findings suggest:

Cardiogenic shock with fluid overload (Correct answer)
Hypovolemic shock requiring volume
Distributive shock requiring vasopressors
Normal postoperative hemodynamics

Correct answer: Cardiogenic shock with fluid overload

A CI below 2.2 with an elevated PCWP indicates the left ventricle is volume-loaded but failing, consistent with cardiogenic shock.

Question 144: The normal spectral waveform of the superior mesenteric artery (SMA) in the fasting state is best described as:

Low-resistance with continuous forward diastolic flow
High-resistance with absent or reversed diastolic flow (Correct answer)
Biphasic with a small reversed component
Monophasic with slow systolic upstroke

Correct answer: High-resistance with absent or reversed diastolic flow

The fasting SMA has a high-resistance waveform with absent or minimal diastolic flow because the intestinal vascular bed is constricted when not digesting.

Question 145: What MET level is generally considered the threshold for good functional capacity in a standard adult stress test?

5 METs
10 METs (Correct answer)
2 METs
15 METs

Correct answer: 10 METs

Achieving ≥10 METs indicates good functional capacity and is associated with a favorable prognosis regardless of ST changes.

Question 146: What is the significance of an E-point septal separation (EPSS) greater than 10 mm on M-mode echocardiography?

Mitral valve stenosis
Reduced left ventricular systolic function (depressed EF) (Correct answer)
Normal left ventricular systolic function
Elevated left ventricular filling pressures

Correct answer: Reduced left ventricular systolic function (depressed EF)

EPSS > 10 mm indicates the mitral valve anterior leaflet does not open fully toward the septum, reflecting reduced LV systolic function and low stroke volume.

Question 147: A 16-year-old patient presents for an elective echocardiogram without a parent present. Regarding consent, the CVT should:

Call the physician to verbally authorize the study
Defer the elective procedure and contact the parent or guardian for consent (Correct answer)
Ask the patient to sign the consent form themselves
Proceed because echocardiography is non-invasive and risk-free

Correct answer: Defer the elective procedure and contact the parent or guardian for consent

Minors generally cannot provide independent informed consent for elective procedures; a parent or legal guardian must authorize the study.

Question 148: What is the PRIMARY purpose of continuing education requirements in Cardiac Catheterization Procedures for CVT professionals?

Networking with other professionals in the field
Earning additional credentials for career advancement
Fulfilling mandatory regulatory requirements only
Maintaining current knowledge and competency as the field evolves (Correct answer)

Correct answer: Maintaining current knowledge and competency as the field evolves

Continuing education in Cardiac Catheterization Procedures ensures professionals maintain current knowledge and skills as standards, technologies, and best practices evolve in the Cardiovascular Technologist field.

Question 149: Which lead is best for monitoring lead placement during continuous cardiac monitoring to detect ischemia?

Lead I
Lead V5 (Correct answer)
Lead aVF
Lead II

Correct answer: Lead V5

Lead V5 (or a modified MCL5 equivalent) is the most sensitive single lead for detecting ST depression from left anterior descending artery ischemia.

Question 150: Which portion of the aorta gives rise to the right and left coronary arteries?

Aortic sinuses of Valsalva (Correct answer)
Descending thoracic aorta
Aortic arch
Abdominal aorta

Correct answer: Aortic sinuses of Valsalva

The coronary arteries originate from the left and right aortic sinuses (sinuses of Valsalva) just above the aortic valve cusps.

Question 151: When using the continuity equation to calculate aortic valve area, which measurement is NOT required?

Peak aortic jet velocity (Correct answer)
LVOT diameter
LVOT velocity-time integral
Aortic valve velocity-time integral

Correct answer: Peak aortic jet velocity

The continuity equation uses LVOT area × LVOT VTI = AVA × AV VTI; the peak velocity alone is not required (the full VTI is used).

Question 152: What is the PRIMARY purpose of continuing education requirements in Cardiac Rhythm Management Devices for CVT professionals?

Earning additional credentials for career advancement
Maintaining current knowledge and competency as the field evolves (Correct answer)
Fulfilling mandatory regulatory requirements only
Networking with other professionals in the field

Correct answer: Maintaining current knowledge and competency as the field evolves

Continuing education in Cardiac Rhythm Management Devices ensures professionals maintain current knowledge and skills as standards, technologies, and best practices evolve in the Cardiovascular Technologist field.

Question 153: An unconscious patient arrives in the cardiac catheterization lab without an advance directive and requires emergency intervention. The ethical course of action is to:

Request a court order before performing any procedure
Proceed with life-saving treatment under implied consent (Correct answer)
Allow the patient to die naturally in accordance with assumed wishes
Withhold treatment until a family member can be contacted

Correct answer: Proceed with life-saving treatment under implied consent

Implied consent permits emergency life-saving treatment when a patient cannot provide explicit consent and no advance directive exists.

Question 154: A patient with an abdominal aortic aneurysm (AAA) has swirling color Doppler flow within the sac. This turbulent flow pattern is caused by:

High-velocity jet through a stenosis
Arteriovenous fistula formation
Retrograde flow due to aortic regurgitation
Flow separation and recirculation within the dilated segment (Correct answer)

Correct answer: Flow separation and recirculation within the dilated segment

Aneurysmal dilation disrupts laminar flow, causing flow separation at the dilated walls and recirculation eddies visible as swirling color Doppler patterns.

Question 155: Ashman's phenomenon refers to aberrant conduction that occurs when:

LBBB develops during tachycardia
A PVC follows a long RR interval followed by a short RR interval (Correct answer)
A sinus pause exceeds 2 seconds
A PAC follows two normal sinus beats

Correct answer: A PVC follows a long RR interval followed by a short RR interval

Ashman's phenomenon occurs when a short RR cycle follows a long RR cycle, causing aberrant conduction because the bundle branches have unequal refractory periods.

Question 156: During right heart catheterization, the catheter is positioned in the pulmonary artery 'wedge' position. What does this measurement approximate?

Pulmonary artery systolic pressure
Left atrial pressure (Correct answer)
Right ventricular end-diastolic pressure
Aortic root pressure

Correct answer: Left atrial pressure

The PCWP reflects back-pressure from the left atrium when the catheter occludes forward flow in a branch pulmonary artery.

Question 157: A patient experiences a vasovagal response (hypotension and bradycardia) during an exercise stress test. The FIRST intervention should be:

Place the patient in the supine or Trendelenburg position (Correct answer)
Administer atropine intravenously
Increase the treadmill incline to maintain cardiac output
Terminate the test and call a code

Correct answer: Place the patient in the supine or Trendelenburg position

Positioning the patient supine or in Trendelenburg helps restore venous return and cerebral perfusion during a vasovagal episode.

Question 158: Why is cryoablation often preferred over RF ablation for AVNRT located close to the AV node?

It eliminates the need for fluoroscopic guidance
It allows reversible testing (cryomapping) before creating a permanent lesion (Correct answer)
It creates larger lesions with less contact force
It generates more precise temperature control above 70°C

Correct answer: It allows reversible testing (cryomapping) before creating a permanent lesion

Cryoablation permits cryomapping at –30°C; if AV block occurs, the effect is reversible, reducing the risk of permanent AV nodal damage.

Question 159: What is the primary advantage of intravascular ultrasound (IVUS) over coronary angiography during a catheterization procedure?

It measures coronary flow velocity more accurately
It provides real-time cross-sectional imaging of plaque burden and vessel architecture (Correct answer)
It can treat coronary stenoses without balloon inflation
It eliminates the need for contrast injection

Correct answer: It provides real-time cross-sectional imaging of plaque burden and vessel architecture

IVUS provides detailed cross-sectional imaging of plaque composition, vessel wall architecture, and stent apposition not visible on angiography.

Question 160: What documentation practice is considered essential in Hemodynamic Monitoring within the Cardiovascular Technologist field?

Completing all documentation at the end of the workday
Only documenting unusual events or complications
Using shorthand notes that can be expanded later if needed
Recording actions, observations, and outcomes in real-time or as close to the event as possible (Correct answer)

Correct answer: Recording actions, observations, and outcomes in real-time or as close to the event as possible

Real-time or near-real-time documentation in Hemodynamic Monitoring ensures accuracy, provides a contemporaneous record, and is considered the gold standard for professional accountability and legal defensibility.

Question 161: A MUGA (Multi-Gated Acquisition) scan is primarily used to measure:

Coronary artery anatomy and stenosis
Myocardial perfusion during stress
Pericardial inflammation
Left ventricular ejection fraction with high reproducibility (Correct answer)

Correct answer: Left ventricular ejection fraction with high reproducibility

MUGA scan uses ECG-gated Tc-99m labeled red blood cells to accurately measure LVEF by tracking blood pool volumes through the cardiac cycle.

Question 162: The vertebral artery Doppler waveform shows complete reversal of flow direction. This is diagnostic of:

Vertebral artery hypoplasia
Complete subclavian steal syndrome (Correct answer)
Vertebral artery dissection
Basilar artery stenosis

Correct answer: Complete subclavian steal syndrome

Complete reversal of vertebral artery flow direction indicates complete subclavian steal, where the ipsilateral arm's demand reverses vertebral flow to bypass a proximal subclavian occlusion.

Question 163: A patient has an ABI of 0.55 at rest. After treadmill exercise the ABI drops to 0.30 and recovers slowly. This pattern indicates:

Venous claudication
Normal physiologic response to exercise
Hemodynamically significant arterial occlusive disease with exercise-induced ischemia (Correct answer)
Isolated calcified vessels without true stenosis

Correct answer: Hemodynamically significant arterial occlusive disease with exercise-induced ischemia

A post-exercise drop in ABI that recovers slowly confirms hemodynamically significant PAD where collateral supply is insufficient to meet the increased metabolic demand of exercise.

Question 164: Tissue Doppler imaging (TDI) of the mitral annulus is used primarily to assess which parameter?

Valvular regurgitation severity
Left ventricular ejection fraction
Pulmonary artery systolic pressure
Myocardial velocities and diastolic function (Correct answer)

Correct answer: Myocardial velocities and diastolic function

TDI measures annular velocities (e', a', s') to evaluate myocardial motion and estimate left ventricular filling pressures.

Question 165: A CVT records an ECG showing sinus rhythm with a PR interval of 0.28 seconds. This finding is consistent with:

Third-degree AV block
Second-degree AV block Mobitz I
Second-degree AV block Mobitz II
First-degree AV block (Correct answer)

Correct answer: First-degree AV block

A PR interval greater than 0.20 seconds with consistent 1:1 AV conduction defines first-degree AV block.

Question 166: On the ECG, lead aVR views the heart from which vantage point?

Left lateral wall
Right shoulder (base of heart) (Correct answer)
Inferior wall
Posterior wall

Correct answer: Right shoulder (base of heart)

Lead aVR looks at the heart from the right shoulder, viewing the base and the cavity of the left ventricle; it is often a mirror image of inferior leads.

Question 167: A patient develops chest pain, ST elevation, and hemodynamic instability during PCI. Angiography shows abrupt vessel closure at the stent site. What is the most likely mechanism?

Air embolism into the coronary artery
Contrast-induced coronary spasm
Coronary vasospasm
Coronary artery dissection with luminal compromise (Correct answer)

Correct answer: Coronary artery dissection with luminal compromise

Abrupt vessel closure during PCI is most commonly caused by coronary artery dissection that creates a flow-limiting intimal flap.

Question 168: Beta-blockers are contraindicated in patients with which of the following conditions?

Stable angina
Post-MI management
Hypertension
Decompensated heart failure (Correct answer)

Correct answer: Decompensated heart failure

Beta-blockers are contraindicated in acute decompensated heart failure because negative inotropy can worsen cardiac output and precipitate cardiogenic shock.

Question 169: During coronary angiography, the technologist notices the contrast does not clear from a coronary artery segment between injections. This is known as:

TIMI 0 flow
No-reflow phenomenon
Spontaneous coronary artery dissection
Coronary ectasia (Correct answer)

Correct answer: Coronary ectasia

Coronary ectasia is abnormal dilation of coronary segments causing slow contrast clearance due to turbulent, sluggish flow.

Question 170: What documentation practice is considered essential in Cardiac Catheterization Procedures within the Cardiovascular Technologist field?

Recording actions, observations, and outcomes in real-time or as close to the event as possible (Correct answer)
Using shorthand notes that can be expanded later if needed
Only documenting unusual events or complications
Completing all documentation at the end of the workday

Correct answer: Recording actions, observations, and outcomes in real-time or as close to the event as possible

Real-time or near-real-time documentation in Cardiac Catheterization Procedures ensures accuracy, provides a contemporaneous record, and is considered the gold standard for professional accountability and legal defensibility.

Question 171: What is the correct placement for the V3 precordial lead?

Fifth intercostal space, midclavicular line
Directly on the sternum
Midway between V2 and V4 (Correct answer)
Fourth intercostal space, right sternal border

Correct answer: Midway between V2 and V4

The V3 lead is placed midway between V2 and V4 on the chest wall.

CCI Registered Cardiovascular Invasive Specialist (RCIS)

The RCIS certification by Cardiovascular Credentialing International (CCI) validates competency of cardiovascular technologists in invasive cardiac procedures including cardiac catheterization, interventional cardiology, electrophysiology, and hemodynamic monitoring.

170

Questions

170 min

Time Limit

72%

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