Cardiac Surgery Subspecialty Certification (CSC) — Questions and Answers

Question 1: Which of the following is the MOST effective strategy for sustaining quality improvements in a cardiac care program long-term?

Relying on physician champions to enforce new protocols informally
Publishing the improvement results in a peer-reviewed journal
Embedding the improvement into standard operating procedures, policies, and ongoing monitoring systems (Correct answer)
Conducting a one-time intensive staff education session

Correct answer: Embedding the improvement into standard operating procedures, policies, and ongoing monitoring systems

Sustainability requires hardwiring changes into the system through standardized policies, protocols, and ongoing measurement rather than relying on individual effort.

Question 2: Which scoring system stratifies risk of contrast-induced nephropathy following PCI based on pre-procedure clinical variables?

Mehran risk score (Correct answer)
GRACE score
SYNTAX score
TIMI risk index

Correct answer: Mehran risk score

The Mehran risk score uses variables such as age, contrast volume, eGFR, hemodynamic status, and diabetes to stratify the risk of contrast-induced nephropathy after PCI.

Question 3: A patient has a 12-lead ECG showing delta waves, short PR interval, and wide QRS. He develops rapid atrial fibrillation. Which drug is CONTRAINDICATED?

Procainamide
IV adenosine (Correct answer)
Ibutilide
DC cardioversion

Correct answer: IV adenosine

Adenosine (and AV-nodal blocking agents like digoxin, verapamil, diltiazem, and beta-blockers) are contraindicated in WPW with AF as they can accelerate conduction down the accessory pathway, precipitating ventricular fibrillation.

Question 4: Which echocardiographic parameter best estimates LV filling pressures non-invasively in a patient with HFpEF?

Mitral annular E/e' ratio (Correct answer)
LV ejection fraction
LV end-diastolic volume
Right ventricular systolic pressure alone

Correct answer: Mitral annular E/e' ratio

The E/e' ratio (transmitral E velocity divided by tissue Doppler e' velocity) correlates with PCWP and is the primary non-invasive estimator of LV filling pressures.

Question 5: Compared to 2D biplane Simpson's method, 3D full-volume echocardiographic LVEF measurement offers which primary advantage?

Lower operator dependency than any other echocardiographic method
Superior temporal resolution for detecting wall motion abnormalities
Better agreement with cardiac MRI due to elimination of geometric assumptions (Correct answer)
Faster acquisition time in patients with poor acoustic windows

Correct answer: Better agreement with cardiac MRI due to elimination of geometric assumptions

3D full-volume LVEF does not rely on geometric assumptions about ventricular shape, yielding better correlation with cardiac MRI reference values.

Question 6: A study of ICD implantation uses propensity score matching to reduce confounding. What is the primary purpose of this technique?

To increase sample size by including more patients
To randomize patients retrospectively
To balance baseline characteristics between treated and untreated groups (Correct answer)
To eliminate the need for multivariable regression

Correct answer: To balance baseline characteristics between treated and untreated groups

Propensity score matching balances observed covariates between groups in observational studies to reduce confounding, mimicking randomization.

Question 7: A Wenckebach AV block: what is it?

A delay in the conduction of the impulse through the AV junction
Increasingly difficult AV node conduction showing a P wave not followed by a QRS complex on EKG (Correct answer)
No conduction of impulse from the atria to the ventricles
A delayed AV conduction at the bundle braches

Correct answer: Increasingly difficult AV node conduction showing a P wave not followed by a QRS complex on EKG

A Wenckebach AV block, or Mobitz Type I second-degree AV block, is characterized by a progressive lengthening of the PR interval over several consecutive beats. Eventually, an atrial impulse (P wave) fails to conduct through the AV node, resulting in a dropped QRS complex. This pattern then typically repeats, indicating increasingly difficult conduction within the AV node.

Question 8: Which hemodynamic parameter defines pulmonary arterial hypertension (PAH) by current guidelines?

Systolic PAP >40 mmHg on echocardiography
Mean PAP >20 mmHg at rest with PCWP ≤15 mmHg and PVR ≥3 WU (Correct answer)
Mean PAP >20 mmHg with any PCWP
Mean PAP >25 mmHg at rest with PCWP ≤15 mmHg

Correct answer: Mean PAP >20 mmHg at rest with PCWP ≤15 mmHg and PVR ≥3 WU

Updated 2022 ESC/ERS guidelines define PAH as mean PAP >20 mmHg, PCWP ≤15 mmHg, and PVR ≥3 Wood Units on right heart catheterization.

Question 9: A patient with known aortic stenosis has an aortic valve area of 0.7 cm² but a mean gradient of only 22 mmHg due to low cardiac output. How is this best categorized?

Severe high-gradient aortic stenosis
Moderate aortic stenosis
Pseudosevere aortic stenosis
Low-flow, low-gradient severe aortic stenosis (Correct answer)

Correct answer: Low-flow, low-gradient severe aortic stenosis

Low-flow, low-gradient severe AS occurs when reduced stroke volume limits gradient despite truly severe valve obstruction; dobutamine stress echo helps distinguish true from pseudosevere AS.

Question 10: Which action is most appropriate when a control chart shows a data point outside the upper control limit (UCL) for contrast dose in a cardiac cath lab?

Ignore it if it is a single isolated point
Report it immediately to the state health department
Widen the control limits to accommodate the outlier
Investigate for a special cause of variation and take corrective action (Correct answer)

Correct answer: Investigate for a special cause of variation and take corrective action

A point outside the control limits signals a special (assignable) cause of variation that requires investigation and corrective action.

Question 11: A 55-year-old woman undergoes elective TAVR and develops complete heart block immediately after valve deployment. What is the appropriate next step?

Place a temporary transvenous pacemaker and evaluate for permanent pacemaker need (Correct answer)
Observe for 24 hours before any action
Perform immediate valve explantation
Administer IV atropine and discharge

Correct answer: Place a temporary transvenous pacemaker and evaluate for permanent pacemaker need

Complete heart block post-TAVR requires immediate temporary pacing, with permanent pacemaker implantation if conduction does not recover, typically within 24–72 hours.

Question 12: What role does active listening play in Cardiac Subspecialty Certification Exam practice?

It wastes time
It ensures accurate understanding, demonstrates respect, and improves outcomes (Correct answer)
It is only for counseling professionals
It means staying silent

Correct answer: It ensures accurate understanding, demonstrates respect, and improves outcomes

This is fundamental to Cardiac Subspecialty Certification Exam practice. It ensures accurate understanding, demonstrates respect, and improves outcomes represents the professional standard for communication in the CSC certification framework.

Question 13: In echocardiography, the parasternal long axis view best assesses:

Tricuspid valve and inferior vena cava
Pulmonary veins and left atrial appendage
Mitral valve, aortic valve, left ventricle, and aortic root (Correct answer)
Right ventricular outflow tract only

Correct answer: Mitral valve, aortic valve, left ventricle, and aortic root

The parasternal long axis (PLAX) view provides excellent visualization of the mitral valve, aortic valve, left ventricle, and aortic root.

Question 14: The coronary sinus drains venous blood from the myocardium into the:

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

Correct answer: Right atrium

The coronary sinus is the major venous channel draining cardiac venous blood into the right atrium.

Question 15: A 45-year-old with familial hypercholesterolemia (LDL 210 mg/dL on maximum-dose statin + ezetimibe) has an ASCVD risk >20%. What is the most appropriate next escalation of lipid-lowering therapy?

Add bile acid sequestrant (cholestyramine)
Add a PCSK9 inhibitor (evolocumab or alirocumab) (Correct answer)
Add niacin for additional LDL reduction
Switch to rosuvastatin 40 mg and reassess in 6 months

Correct answer: Add a PCSK9 inhibitor (evolocumab or alirocumab)

PCSK9 inhibitors reduce LDL by 50-60% and are indicated for patients with ASCVD or FH who remain above target on maximally tolerated statin + ezetimibe.

Question 16: A 65-year-old presents with new-onset atrial fibrillation and a CHA₂DS₂-VASc score of 3. Which anticoagulation strategy is most appropriate?

Aspirin 81 mg daily
No anticoagulation needed below score of 4
Dual antiplatelet therapy with aspirin and clopidogrel
Oral anticoagulation with a DOAC or warfarin (Correct answer)

Correct answer: Oral anticoagulation with a DOAC or warfarin

A CHA₂DS₂-VASc score ≥2 in men (≥3 in women) warrants oral anticoagulation to reduce stroke risk in AF.

Question 17: Which tool is commonly used for root cause analysis in CSC quality management?

Random sampling
Profit analysis
Fishbone (Ishikawa) diagram to identify contributing factors systematically (Correct answer)
Customer surveys only

Correct answer: Fishbone (Ishikawa) diagram to identify contributing factors systematically

This is fundamental to Cardiac Subspecialty Certification Exam practice. Fishbone (Ishikawa) diagram to identify contributing factors systematically represents the professional standard for quality in the CSC certification framework.

Question 18: In AI-driven clinical decision support for chest pain evaluation, which input combination provides the most accurate early risk stratification?

Patient-reported pain severity score alone
Physician gestalt estimate based on clinical experience
Population-level mortality rates for the patient's demographic group
Integration of high-sensitivity troponin, ECG findings, and structured clinical history (Correct answer)

Correct answer: Integration of high-sensitivity troponin, ECG findings, and structured clinical history

Validated tools such as the HEART score integrate troponin, ECG, and clinical history into a calibrated risk prediction that outperforms individual data elements alone.

Question 19: Why is evidence-based practice important in Cardiac Subspecialty Certification Exam?

It only applies to academic settings
It replaces experience
It is a theoretical concept only
It integrates best available evidence with professional expertise for optimal outcomes (Correct answer)

Correct answer: It integrates best available evidence with professional expertise for optimal outcomes

This is fundamental to Cardiac Subspecialty Certification Exam practice. It integrates best available evidence with professional expertise for optimal outcomes represents the professional standard for research in the CSC certification framework.

Question 20: The chordae tendineae attach the atrioventricular valve leaflets to the:

Papillary muscles (Correct answer)
Trabeculae carneae
Interventricular septum
Annulus fibrosus

Correct answer: Papillary muscles

Chordae tendineae are fibrous cords that connect AV valve leaflets to papillary muscles, preventing valve prolapse during systole.

Question 21: Cardiac index is calculated by dividing cardiac output by:

Mean arterial pressure
Heart rate
Body surface area (Correct answer)
Stroke volume

Correct answer: Body surface area

Cardiac index normalizes cardiac output to body surface area (L/min/m²), allowing comparison across patients of different sizes.

Question 22: In cardiac MRI, late gadolinium enhancement (LGE) identifies:

Valvular regurgitation volumes
Myocardial fibrosis or scar tissue (Correct answer)
Areas of active inflammation only
Normal myocardial perfusion

Correct answer: Myocardial fibrosis or scar tissue

LGE in cardiac MRI reflects areas where gadolinium accumulates due to expanded extracellular space from fibrosis or necrosis, identifying myocardial scar.

Question 23: A 42-year-old woman with SLE presents with dyspnea and echo showing thickened mitral and aortic leaflets with regurgitation but no vegetations. Blood cultures are negative. What is the most likely diagnosis?

Infective endocarditis
Libman-Sacks endocarditis (Correct answer)
Carcinoid heart disease
Rheumatic heart disease

Correct answer: Libman-Sacks endocarditis

Libman-Sacks endocarditis is a nonbacterial thrombotic endocarditis associated with SLE, characterized by sterile vegetations typically on both sides of the valve leaflets.

Question 24: Which echocardiographic view best visualizes the tricuspid valve?

Subcostal short axis
Apical four-chamber view (Correct answer)
Parasternal long axis
Apical two-chamber view

Correct answer: Apical four-chamber view

The apical four-chamber view provides excellent visualization of both the tricuspid and mitral valves simultaneously.

Question 25: A patient with dilated cardiomyopathy, LVEF 30%, NYHA Class II symptoms, and LBBB with QRS duration of 155 ms is on optimal medical therapy. Which risk-reducing intervention is MOST indicated?

Urgent cardiac transplant evaluation
Implantable cardioverter-defibrillator (ICD) alone
Catheter ablation of the left bundle branch
Cardiac resynchronization therapy with defibrillator (CRT-D) (Correct answer)

Correct answer: Cardiac resynchronization therapy with defibrillator (CRT-D)

CRT-D is a Class I indication in patients with LVEF ≤35%, NYHA Class II-III symptoms, and LBBB with QRS ≥150 ms on GDMT, providing both mortality benefit and resynchronization.

Question 26: When designing a quality improvement study in cardiology, 'balancing measures' are used to:

Monitor unintended consequences of an improvement intervention on other parts of the system (Correct answer)
Calculate the cost-effectiveness of the new protocol
Ensure the primary outcome is statistically significant
Balance the number of patients in each study arm

Correct answer: Monitor unintended consequences of an improvement intervention on other parts of the system

Balancing measures assess whether changes made to improve one part of a system are causing harm elsewhere in the system.

Question 27: Which coronary artery primarily supplies the anterior wall of the left ventricle?

Left anterior descending artery (Correct answer)
Posterior descending artery
Right coronary artery
Left circumflex artery

Correct answer: Left anterior descending artery

The left anterior descending (LAD) artery supplies the anterior wall and apex of the left ventricle.

Question 28: Which of the following scenarios represents an appropriate boundary between cardiac technologist and physician roles?

A technologist adjusting antihypertensive dosage based on stress test blood pressure results
A technologist measuring and reporting LV ejection fraction to the interpreting cardiologist (Correct answer)
A technologist diagnosing pericardial effusion and recommending pericardiocentesis
A technologist modifying the pharmacological stress protocol independently based on patient response

Correct answer: A technologist measuring and reporting LV ejection fraction to the interpreting cardiologist

Measuring and reporting quantitative findings like LVEF is within the sonographer's technical scope; diagnosis and treatment decisions belong to the physician.

Question 29: A patient with acute decompensated heart failure has a pulmonary capillary wedge pressure (PCWP) of 28 mmHg and a cardiac index of 1.8 L/min/m². Which hemodynamic profile best describes this patient?

Warm and wet
Cold and dry
Warm and dry
Cold and wet (Correct answer)

Correct answer: Cold and wet

A low cardiac index (<2.2) with elevated filling pressures (PCWP >18 mmHg) defines the 'cold and wet' profile, indicating low perfusion and congestion.

Question 30: What is a risk mitigation strategy in Cardiac Subspecialty Certification Exam practice?

Implementing controls that reduce the likelihood or impact of identified risks (Correct answer)
Transferring all responsibility
Ignoring low-probability risks
Only addressing risks after they occur

Correct answer: Implementing controls that reduce the likelihood or impact of identified risks

This is fundamental to Cardiac Subspecialty Certification Exam practice. Implementing controls that reduce the likelihood or impact of identified risks represents the professional standard for risk management in the CSC certification framework.

Question 31: A 62-year-old woman with no cardiac history presents with acute anterior ST elevation MI. Primary PCI is performed at 90 minutes after first medical contact. Post-PCI TIMI flow is 3, but echocardiography shows apical ballooning with hyperkinetic basal segments. What is the most likely diagnosis?

Takotsubo (stress) cardiomyopathy mimicking STEMI (Correct answer)
Right ventricular infarction complicating anterior STEMI
Left ventricular thrombus formation
Anterior STEMI with successful reperfusion and wall motion recovery

Correct answer: Takotsubo (stress) cardiomyopathy mimicking STEMI

Apical ballooning with basal hyperkinesis (reverse pattern) in the distribution of multiple coronary territories, despite patent arteries, is the hallmark of Takotsubo cardiomyopathy.

Question 32: A patient has CO 2.5 L/min, HR 110 bpm. What is the stroke volume?

17 mL
275 mL
44 mL
23 mL (Correct answer)

Correct answer: 23 mL

Stroke volume = CO / HR = 2500 mL/min ÷ 110 bpm ≈ 23 mL, which is severely reduced (normal ~70 mL).

Question 33: Pulmonary capillary wedge pressure (PCWP) is used to estimate pressure in which cardiac chamber?

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

Correct answer: Left atrium

PCWP approximates left atrial pressure because the inflated balloon occludes forward flow, reflecting the static column of blood back to the left atrium.

Question 34: A 65-year-old woman post-MI 6 weeks ago presents with pleuritic chest pain, friction rub, and new diffuse ST elevation. Echo shows a small pericardial effusion. What is the best treatment?

Restart anticoagulation at therapeutic levels
High-dose aspirin and colchicine (Correct answer)
IV methylprednisolone
Pericardiocentesis

Correct answer: High-dose aspirin and colchicine

Dressler syndrome (post-MI pericarditis) is treated with aspirin as the preferred NSAID and colchicine to reduce recurrence risk.

Question 35: Protamine sulfate is used to reverse the effects of:

Warfarin
Unfractionated heparin (Correct answer)
Direct oral anticoagulants (DOACs)
Low-molecular-weight heparin (LMWH) completely

Correct answer: Unfractionated heparin

Protamine sulfate binds and neutralizes unfractionated heparin; it only partially reverses LMWH and has no effect on DOACs.

Question 36: Which valve separates the left atrium from the left ventricle?

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

Correct answer: Mitral valve

The mitral valve (bicuspid valve) is located between the left atrium and left ventricle.

Question 37: How should Cardiac Subspecialty Certification Exam professionals handle conflicts with stakeholders?

Escalate immediately to management
Avoid all conflict
Ignore stakeholder concerns
Address issues professionally through active listening, finding common ground, and seeking resolution (Correct answer)

Correct answer: Address issues professionally through active listening, finding common ground, and seeking resolution

This is fundamental to Cardiac Subspecialty Certification Exam practice. Address issues professionally through active listening, finding common ground, and seeking resolution represents the professional standard for communication in the CSC certification framework.

Question 38: A patient with hypertrophic obstructive cardiomyopathy (HOCM) presents with worsening dyspnea. Which maneuver would INCREASE the outflow tract gradient?

Passive leg raise
Isometric handgrip
Valsalva maneuver (Correct answer)
Squatting

Correct answer: Valsalva maneuver

The Valsalva maneuver decreases preload and venous return, reducing LV cavity size and worsening HOCM obstruction.

Question 39: Which medication is used to chemically cardiovert atrial fibrillation in a hemodynamically stable patient?

Ibutilide or flecainide (Correct answer)
Furosemide
Digoxin
Metoprolol

Correct answer: Ibutilide or flecainide

Ibutilide (IV) and flecainide (oral, in structurally normal hearts) are antiarrhythmics used for pharmacologic cardioversion of recent-onset atrial fibrillation.

Question 40: Which non-invasive technique uses changes in thoracic electrical impedance to estimate cardiac output?

Thermodilution
Pulse oximetry
Echocardiographic Doppler
Impedance cardiography (Correct answer)

Correct answer: Impedance cardiography

Impedance cardiography (bioimpedance) measures changes in thoracic electrical resistance caused by aortic blood flow to non-invasively estimate cardiac output.

Question 41: When the SA node fails to depolarize the atria, what is the condition known as?

Cardiac failure
Atrial flutter
Hypersensitization
Sinus pause (Correct answer)

Correct answer: Sinus pause

A sinus pause, also known as sinus arrest, occurs when the sinoatrial (SA) node, the heart's natural pacemaker, temporarily fails to generate an electrical impulse. This leads to an absence of P waves and subsequent QRS complexes on the EKG for a period. The duration of the pause can vary, and if prolonged, it may cause symptoms due to a lack of cardiac output.

Question 42: Which quality assurance measure is most effective in identifying systematic errors in echocardiographic measurements across a laboratory?

Comparing measurements only on the first study of each day
Reviewing only studies flagged by referring physicians as problematic
Peer review of random studies by credentialed interpreters (Correct answer)
Conducting quality reviews exclusively during accreditation cycles

Correct answer: Peer review of random studies by credentialed interpreters

Routine peer review of randomly selected studies is the gold standard for identifying systematic measurement errors and image quality deficiencies.

Question 43: Right heart catheterization measures all of the following EXCEPT:

Pulmonary artery pressure
Coronary artery stenosis severity (Correct answer)
Cardiac output by thermodilution
Pulmonary capillary wedge pressure

Correct answer: Coronary artery stenosis severity

Right heart catheterization measures hemodynamic pressures (PA, PCWP, RAP) and cardiac output but does not assess coronary artery anatomy — that requires coronary angiography.

Question 44: Normal left ventricular ejection fraction (LVEF) range is approximately:

30–45%
45–55%
70–85%
55–70% (Correct answer)

Correct answer: 55–70%

A normal LVEF is 55–70%, indicating the percentage of blood ejected per contraction.

Question 45: How should an CSC professional handle an outcome that differs from expectations?

Repeat the same approach
Analyze contributing factors, document findings, and adjust approach based on lessons learned (Correct answer)
Blame external factors
Ignore the discrepancy

Correct answer: Analyze contributing factors, document findings, and adjust approach based on lessons learned

This is fundamental to Cardiac Subspecialty Certification Exam practice. Analyze contributing factors, document findings, and adjust approach based on lessons learned represents the professional standard for practical in the CSC certification framework.

Question 46: Which vessels return oxygenated blood from the lungs to the heart?

Pulmonary veins (Correct answer)
Pulmonary arteries
Superior and inferior vena cavae
Coronary sinus

Correct answer: Pulmonary veins

The four pulmonary veins carry oxygenated blood from the lungs back to the left atrium.

Question 47: How do CSC professionals transfer knowledge from training to practice?

By passing the certification exam only
Through supervised practice, mentoring, gradual independence, and ongoing feedback (Correct answer)
Training and practice are unrelated
Knowledge transfers automatically

Correct answer: Through supervised practice, mentoring, gradual independence, and ongoing feedback

This is fundamental to Cardiac Subspecialty Certification Exam practice. Through supervised practice, mentoring, gradual independence, and ongoing feedback represents the professional standard for practical in the CSC certification framework.

Question 48: Which organization publishes the Society of Thoracic Surgeons (STS) National Database risk scores used as a quality benchmark for cardiac surgery programs?

Centers for Medicare & Medicaid Services
Society of Thoracic Surgeons (Correct answer)
The Joint Commission
American Heart Association

Correct answer: Society of Thoracic Surgeons

The STS publishes and maintains the STS National Database and associated risk models used to benchmark cardiac surgical outcomes nationally.

Question 49: Transesophageal echocardiography (TEE) is preferred over transthoracic echocardiography (TTE) for evaluating:

Pericardial effusion
Pulmonary hypertension
Left atrial thrombus and aortic dissection (Correct answer)
Right ventricular size

Correct answer: Left atrial thrombus and aortic dissection

TEE provides superior image quality for posterior structures like the left atrial appendage and descending aorta, making it ideal for detecting thrombus and aortic dissection.

Question 50: Doppler echocardiography measures:

Valve leaflet thickness
Pericardial effusion volume
Blood flow velocity and direction (Correct answer)
Myocardial thickness and mass

Correct answer: Blood flow velocity and direction

Doppler echocardiography uses the Doppler effect to measure blood flow velocities and directions within the heart and great vessels.

Question 51: A cardiologist is asked to participate in a pharmaceutical company's speakers bureau for a new anticoagulant. Under CMS Open Payments (Sunshine Act), this arrangement must be reported if it exceeds:

$0 (all payments must be reported)
$10 aggregate per year (Correct answer)
$500 per transfer of value
$100 per transfer of value

Correct answer: $10 aggregate per year

The Physician Payments Sunshine Act requires manufacturers to report all payments and transfers of value to physicians exceeding $10 in aggregate per year.

Question 52: During a telehealth visit for a patient with known systolic heart failure, which remote assessment provides the most clinically actionable information for management decisions?

Cardiac auscultation via a consumer-grade smartphone microphone application
Video assessment of bilateral lower extremity edema combined with review of daily weight trend (Correct answer)
Patient self-reported blood pressure without a validated home device
Symptom diary review without any objective measurement data

Correct answer: Video assessment of bilateral lower extremity edema combined with review of daily weight trend

Visual assessment of edema combined with serial weight data provides objective evidence of volume status changes that directly guide diuretic adjustments.

Question 53: Adenosine should be avoided in patients with:

Stable coronary artery disease
Mild mitral regurgitation
Hypertension only
Severe reactive airway disease (asthma) or high-degree AV block (Correct answer)

Correct answer: Severe reactive airway disease (asthma) or high-degree AV block

Adenosine can cause severe bronchospasm in asthmatic patients and worsens high-degree AV block by further depressing AV nodal conduction.

Question 54: Which hemodynamic value is used to calculate pulmonary vascular resistance (PVR)?

(mPAP – CVP) / CO
(mPAP – PCWP) / CO (Correct answer)
(SBP – DBP) / HR
(MAP – PCWP) / CO

Correct answer: (mPAP – PCWP) / CO

PVR = (mean PAP – PCWP) / CO × 80, reflecting the resistance across the pulmonary vascular bed from pulmonary artery to left atrium.

Question 55: How do CSC professionals contribute to advancing their field?

By competing with colleagues
By maintaining current practices
By conducting research, sharing outcomes, mentoring others, and participating in professional forums (Correct answer)
Individual contribution is not possible

Correct answer: By conducting research, sharing outcomes, mentoring others, and participating in professional forums

This is fundamental to Cardiac Subspecialty Certification Exam practice. By conducting research, sharing outcomes, mentoring others, and participating in professional forums represents the professional standard for research in the CSC certification framework.

Question 56: A 70-year-old patient with stable angina is found to have a SYNTAX score of 34. What does this imply for revascularization strategy?

CABG is associated with better outcomes than PCI (Correct answer)
Medical therapy alone is recommended
Either PCI or CABG is equally appropriate
PCI is preferred over CABG

Correct answer: CABG is associated with better outcomes than PCI

A SYNTAX score ≥33 (high complexity) indicates that CABG is associated with lower rates of MACE compared to PCI, per ESC/ACC guidelines.

Question 57: A pharmaceutical representative provides a cardiologist with a research grant funded directly by the drug manufacturer. Under AHA conflict-of-interest guidelines for clinical guideline writing, this cardiologist should:

Be excluded from all guideline writing activities
Disclose the relationship but may vote on all recommendations
Disclose and be recused from voting on recommendations related to that manufacturer's products (Correct answer)
Participate freely as research grants are not considered conflicts

Correct answer: Disclose and be recused from voting on recommendations related to that manufacturer's products

AHA and ACC COI policies require disclosure of relevant relationships and recusal from voting on specific recommendations related to the funding company's products.

Question 58: In an EBP model, after a PICO question is formulated for anticoagulation in cancer-associated thrombosis, the next step is to:

Evaluate patient outcomes after the intervention
Convene a multidisciplinary committee
Search and acquire the best available evidence (Correct answer)
Apply the best available evidence immediately

Correct answer: Search and acquire the best available evidence

After formulating the PICO question (Ask), the next EBP step is to Acquire the best available evidence through a systematic literature search.

Question 59: A 55-year-old athlete presents with syncope during exercise. ECG shows epsilon waves and T-wave inversions in V1–V3. Which diagnosis is most likely?

Brugada syndrome
Long QT syndrome
Arrhythmogenic right ventricular cardiomyopathy (ARVC) (Correct answer)
Hypertrophic cardiomyopathy

Correct answer: Arrhythmogenic right ventricular cardiomyopathy (ARVC)

ARVC classically presents with epsilon waves, T-wave inversions in right precordial leads, and exercise-induced ventricular arrhythmias due to fibrofatty RV replacement.

Question 60: What distinguishes a peer-reviewed study in Cardiac Subspecialty Certification Exam literature?

It was written by multiple authors
Independent experts in the field evaluated the methodology and conclusions before publication (Correct answer)
It was published in any format
It was published quickly

Correct answer: Independent experts in the field evaluated the methodology and conclusions before publication

This is fundamental to Cardiac Subspecialty Certification Exam practice. Independent experts in the field evaluated the methodology and conclusions before publication represents the professional standard for research in the CSC certification framework.

Question 61: A cardiologist is preparing a quality improvement presentation for hospital leadership on reducing door-to-balloon time. Which stakeholder communication approach is most effective when presenting to non-clinical administrators?

Limit the presentation to process maps to maintain objectivity without outcomes data
Translate clinical outcomes into metrics aligned with patient safety, financial impact, and institutional reputation (Correct answer)
Focus only on regulatory and accreditation requirements to motivate action
Use detailed clinical terminology and published literature to establish scientific credibility

Correct answer: Translate clinical outcomes into metrics aligned with patient safety, financial impact, and institutional reputation

Effective communication with non-clinical administrators requires translating clinical outcomes into organizational priorities such as safety metrics, financial implications, and reputation.

Question 62: A cardiologist wants to evaluate long-term outcomes of TAVR vs. SAVR in high-risk patients. Which study design is most appropriate if randomization is not feasible?

Randomized crossover trial
Prospective cohort study (Correct answer)
Case-control study
Cross-sectional study

Correct answer: Prospective cohort study

A prospective cohort study follows participants forward in time, allowing assessment of long-term outcomes when randomization is not feasible.

Question 63: The interventricular septum separates:

The atria from the ventricles
The right and left ventricles (Correct answer)
The two atria
The aorta from the pulmonary artery

Correct answer: The right and left ventricles

The interventricular septum is the muscular/membranous wall dividing the right and left ventricles.

Question 64: Among wearable-derived digital health metrics, which has shown the strongest independent association with cardiovascular mortality in large population studies?

Gradual increase in resting heart rate over 6 months
Average daily step count below 5,000 steps
Reduction in heart rate variability (HRV) (Correct answer)
Sleep duration consistently less than 6 hours per night

Correct answer: Reduction in heart rate variability (HRV)

Reduced HRV reflects autonomic dysfunction and sympathetic dominance, which are strongly and independently associated with cardiovascular mortality across multiple large cohort studies.

Question 65: A 58-year-old man presents with exertional chest pain and dyspnea. Echo shows LVEF 35%, moderate MR, and dilated LV. Coronary angiography reveals 3-vessel disease. What is the most appropriate next step?

Proceed directly to MV repair before revascularization
Perform CABG with concurrent mitral annuloplasty (Correct answer)
Refer for cardiac transplantation evaluation
Initiate medical therapy and reassess in 3 months

Correct answer: Perform CABG with concurrent mitral annuloplasty

In patients with ischemic cardiomyopathy and moderate functional MR, CABG combined with mitral annuloplasty is preferred when revascularization is planned.

Question 66: In a blinded RCT of a cardiac device, blinding of outcome assessors is most critical to prevent which type of bias?

Attrition bias
Reporting bias
Performance bias
Detection bias (Correct answer)

Correct answer: Detection bias

Detection bias occurs when outcome assessors are aware of treatment allocation and unconsciously adjudicate outcomes differently; blinding prevents this.

Question 67: Augmented reality (AR) overlay technology during transcatheter aortic valve replacement (TAVR) procedures is primarily used to:

Provide tactile haptic feedback to the operator's hands during catheter manipulation
Eliminate the operator's need for real-time fluoroscopic guidance
Reduce radiation exposure to the patient and operating team to zero
Fuse pre-procedural 3D CT anatomy onto live fluoroscopic images to guide device positioning (Correct answer)

Correct answer: Fuse pre-procedural 3D CT anatomy onto live fluoroscopic images to guide device positioning

AR overlays pre-procedural CT-derived 3D aortic anatomy onto live fluoroscopy, providing spatial orientation that improves valve positioning accuracy.

Question 68: A hospital asks cardiac sonographers to begin performing vascular ultrasound examinations to cover staffing shortages. A sonographer credentialed only in cardiac sonography should:

Seek verbal approval from a cardiologist before beginning vascular exams
Agree, since ultrasound physics principles are identical across modalities
Decline until appropriate vascular training and credentialing are obtained (Correct answer)
Perform simple venous studies only while declining arterial studies

Correct answer: Decline until appropriate vascular training and credentialing are obtained

Performing vascular ultrasound without the appropriate credential (RVT/RVS) falls outside the cardiac sonographer's established scope of practice.

Question 69: What is the first step in risk assessment for Cardiac Subspecialty Certification Exam professionals?

Implementing controls immediately
Purchasing insurance
Delegating to others
Identifying potential hazards and vulnerabilities in the specific context (Correct answer)

Correct answer: Identifying potential hazards and vulnerabilities in the specific context

This is fundamental to Cardiac Subspecialty Certification Exam practice. Identifying potential hazards and vulnerabilities in the specific context represents the professional standard for risk management in the CSC certification framework.

Question 70: On echocardiography, a patient has E velocity of 120 cm/s, E/A ratio of 2.4, deceleration time of 140 ms, and E/e' of 18. What grade of diastolic dysfunction does this represent?

Grade II (pseudonormal)
Normal diastolic function
Grade III (restrictive filling) (Correct answer)
Grade I (impaired relaxation)

Correct answer: Grade III (restrictive filling)

Grade III diastolic dysfunction (restrictive filling) is characterized by E/A >2, shortened deceleration time (<160 ms), and elevated E/e' (>14), reflecting markedly elevated filling pressures.

Question 71: A cardiac surgery program wants to compare its observed-to-expected (O/E) mortality ratio using risk-adjusted data. An O/E ratio less than 1.0 indicates:

There is insufficient data to draw any conclusion
The program's mortality is higher than expected given its patient mix
The program's mortality is lower than expected, suggesting performance above the national benchmark (Correct answer)
The risk model is not applicable to this patient population

Correct answer: The program's mortality is lower than expected, suggesting performance above the national benchmark

An O/E ratio below 1.0 means fewer patients died than the risk model predicted, indicating better-than-expected performance.

Question 72: What is the method where a balloon is used to flatten plaque up against an arterial wall to provide more room inside the artery for better blood flow?

Coronary Artery Bypass Graft Surgery (CABGS)
Atherectomy
Laser Angioplasty
Percutaneous Transluminal Coronary Angioplasty (PTCA) (Correct answer)

Correct answer: Percutaneous Transluminal Coronary Angioplasty (PTCA)

Percutaneous Transluminal Coronary Angioplasty (PTCA), often simply called angioplasty, is a minimally invasive procedure used to widen narrowed or obstructed blood vessels. A balloon-tipped catheter is inserted and inflated at the site of the plaque, compressing it against the arterial wall to restore adequate blood flow.

Question 73: Which Swan-Ganz catheter waveform finding indicates proper placement in the pulmonary artery?

Flat line indicating wedge position at rest
High-pressure systolic equal to aortic systolic
Low-pressure venous waveform
Dicrotic notch and diastolic pressure higher than RV diastolic (Correct answer)

Correct answer: Dicrotic notch and diastolic pressure higher than RV diastolic

The pulmonary artery waveform shows a dicrotic notch from pulmonic valve closure and a diastolic pressure higher than right ventricular diastolic pressure.

Question 74: The CHAMPION trial demonstrated that remote pulmonary artery pressure monitoring using an implantable sensor (CardioMEMS) primarily reduced which outcome in heart failure patients with NYHA class III symptoms?

Heart failure–related hospitalizations (Correct answer)
All-cause mortality at 6 months
Rate of sudden cardiac death
Need for advanced therapies such as LVAD or transplantation

Correct answer: Heart failure–related hospitalizations

The CHAMPION trial showed a 28% reduction in heart failure hospitalizations through hemodynamic-guided therapy adjustments based on daily PA pressure readings.

Question 75: A cardiac stress lab technologist notes that a patient's blood pressure drops 20 mmHg during treadmill exercise. The supervising physician is unavailable. The technologist should:

Ask the patient if they feel well enough to continue
Immediately stop the test and notify available medical staff (Correct answer)
Continue the test and document the finding at completion
Slow the treadmill speed and continue monitoring

Correct answer: Immediately stop the test and notify available medical staff

A significant exercise-induced drop in systolic BP is an absolute contraindication to continuing; the test must be stopped immediately and medical staff notified.

Question 76: A cardiac catheterization laboratory technologist witnesses a colleague falsifying contrast volume documentation to avoid reporting a contrast limit exceedance. The best course of action is to:

Confront the colleague publicly during the next team meeting
Assume the colleague had a legitimate reason and ignore it
Report the behavior through the institution's compliance or reporting channel (Correct answer)
Alter the colleague's documentation back to the correct values independently

Correct answer: Report the behavior through the institution's compliance or reporting channel

Falsifying medical records is unethical and potentially illegal; proper reporting through established institutional channels is the professional obligation.

Question 77: A new cardiac sonographer is uncertain about the correct measurement technique for tricuspid annular plane systolic excursion (TAPSE). The most professionally appropriate response is to:

Omit the measurement from the report without explanation
Estimate the value based on the general appearance of the right ventricle
Copy the TAPSE value from the patient's prior study
Consult ASE guidelines and seek guidance from a senior colleague or supervisor (Correct answer)

Correct answer: Consult ASE guidelines and seek guidance from a senior colleague or supervisor

Consulting authoritative guidelines and experienced colleagues when uncertain is the hallmark of professional competency and patient safety.

Question 78: A 45-year-old with no cardiac history has a resting 12-lead ECG showing ST segment elevation in V1–V2 with a right bundle branch block pattern. He denies symptoms. Which condition should be PRIMARILY suspected?

Arrhythmogenic right ventricular cardiomyopathy
Anterior STEMI
Hyperkalemia
Brugada syndrome (Correct answer)

Correct answer: Brugada syndrome

Spontaneous Type 1 Brugada pattern (coved ST elevation ≥2 mm in V1–V2 with RBBB morphology) in an asymptomatic patient is diagnostic of Brugada syndrome.

Question 79: A hospital's cardiac surgery program is being evaluated under The Joint Commission's National Patient Safety Goals. Which NPSG is most directly applicable to preventing wrong-site cardiac surgery?

NPSG 02.03.01: Critical Test Reporting
NPSG 07.01.01: Hand Hygiene
NPSG 15.01.01: Suicide Risk Reduction
NPSG 01.01.01: Patient Identification (Correct answer)

Correct answer: NPSG 01.01.01: Patient Identification

NPSG 01.01.01 requires use of at least two patient identifiers, which is the foundation of preventing wrong-patient and wrong-site procedures including cardiac surgery.

Question 80: In electroanatomic mapping during ventricular tachycardia ablation, voltage mapping primarily identifies:

Zones of myocardial hyperemia near the ablation catheter
Normal conduction velocity through the His-Purkinje system
Regions of high sympathetic innervation
Areas of low-voltage scar that serve as arrhythmia substrate (Correct answer)

Correct answer: Areas of low-voltage scar that serve as arrhythmia substrate

Low bipolar voltage (<1.5 mV) in voltage maps identifies myocardial scar, which provides the substrate for reentrant ventricular tachycardia.

Question 81: Under the CMS Hospital Readmissions Reduction Program (HRRP), which cardiac condition is included as a tracked readmission measure?

Atrial fibrillation
Acute Myocardial Infarction (AMI) (Correct answer)
Aortic stenosis
Hypertensive urgency

Correct answer: Acute Myocardial Infarction (AMI)

CMS tracks 30-day risk-standardized readmission rates for Acute Myocardial Infarction, Heart Failure, and CABG surgery under the HRRP, with financial penalties for excess readmissions.

Question 82: A cardiologist encounters conflicting evidence: a large RCT supports early invasive strategy in NSTEMI, but a recent meta-analysis is inconclusive. According to evidence hierarchy, which source generally carries more weight?

The meta-analysis when it includes the large RCT in its analysis (Correct answer)
The meta-analysis, as it synthesizes multiple studies
Neither; expert opinion should supersede both
The large RCT, as individual trials are always superior

Correct answer: The meta-analysis when it includes the large RCT in its analysis

A well-conducted meta-analysis that includes the large RCT in its synthesis generally carries the highest level of evidence according to standard hierarchies.

Question 83: A 60-year-old woman with known ATTR cardiac amyloidosis presents with progressive HFpEF and atrial fibrillation. What therapy has been shown to improve survival in transthyretin amyloid cardiomyopathy?

ACE inhibitors
Ivabradine
Tafamidis (Correct answer)
Sacubitril/valsartan

Correct answer: Tafamidis

Tafamidis stabilizes transthyretin tetramers and has demonstrated significant reductions in cardiovascular mortality and hospitalizations in ATTR cardiomyopathy (ATTR-ACT trial).

Question 84: A 70-year-old man with hypertension presents with acute-onset tearing back pain. CT shows a Stanford Type B aortic dissection without malperfusion. BP is 160/90 mmHg. What is the initial treatment?

IV labetalol to achieve SBP <120 mmHg and HR <60 bpm (Correct answer)
Urgent cardiac catheterization
Emergency open surgical repair
TEVAR within 24 hours

Correct answer: IV labetalol to achieve SBP <120 mmHg and HR <60 bpm

Uncomplicated Stanford Type B dissections are managed medically with aggressive blood pressure and heart rate control as the primary intervention.

Question 85: A patient with aortic stenosis has an aortic valve area of 0.7 cm², a mean gradient of 55 mmHg, but an LVEF of 35%. Which hemodynamic test is MOST helpful to determine true stenosis severity?

Dobutamine stress echocardiography (Correct answer)
Cardiac MRI with gadolinium
Transesophageal echocardiography
Exercise stress echocardiography

Correct answer: Dobutamine stress echocardiography

Low-dose dobutamine stress echo distinguishes true severe aortic stenosis from pseudo-severe AS in low-flow, low-gradient AS with reduced EF.

Question 86: Preload is best defined as:

Ventricular wall tension during contraction
Heart rate times stroke volume
Resistance against which the ventricle ejects blood
End-diastolic volume or ventricular filling pressure (Correct answer)

Correct answer: End-diastolic volume or ventricular filling pressure

Preload refers to the ventricular end-diastolic volume (or pressure), representing the stretch on myocardial fibers before contraction.

Question 87: In the PARTNER trial, transcatheter aortic valve replacement (TAVR) compared to surgical AVR showed which key finding in intermediate-risk patients at 2 years?

TAVR had significantly higher stroke rates
TAVR and SAVR had similar rates of death and disabling stroke (Correct answer)
SAVR had significantly lower rates of paravalvular leak
TAVR had significantly higher rates of permanent pacemaker implantation with no mortality difference

Correct answer: TAVR and SAVR had similar rates of death and disabling stroke

PARTNER 2A demonstrated non-inferiority of TAVR versus SAVR for the primary endpoint of death or disabling stroke in intermediate-risk patients.

Question 88: A patient with hypertrophic obstructive cardiomyopathy (HOCM) has a dynamic outflow tract gradient of 55 mmHg at rest. Which maneuver would INCREASE the gradient?

Squatting
Handgrip exercise
Valsalva maneuver (strain phase) (Correct answer)
Passive leg raise

Correct answer: Valsalva maneuver (strain phase)

The Valsalva strain phase reduces venous return, decreasing LV volume and worsening LVOT obstruction in HOCM.

Question 89: Which echocardiographic parameter BEST differentiates Grade I diastolic dysfunction from a normal diastolic function pattern in a patient with a preserved LVEF?

Mitral E/A ratio <0.8 with average E/e' ≤14 (Correct answer)
Isovolumetric relaxation time >100 ms
Tricuspid regurgitation velocity >2.8 m/s
Left atrial volume index >34 mL/m²

Correct answer: Mitral E/A ratio <0.8 with average E/e' ≤14

Grade I diastolic dysfunction is characterized by impaired relaxation with E/A <0.8 and average E/e' ≤14, reflecting decreased LV relaxation without elevated filling pressures.

Question 90: A quality dashboard for a heart failure program shows a 30-day readmission rate of 22%. According to current benchmarks, this rate is:

Well below the national average of approximately 25%
Below the threshold requiring corrective action under Joint Commission standards
Above the national average and subject to CMS penalty under the Hospital Readmissions Reduction Program (Correct answer)
Acceptable only if the patient population has high comorbidity scores

Correct answer: Above the national average and subject to CMS penalty under the Hospital Readmissions Reduction Program

The national 30-day heart failure readmission rate is approximately 20-21%; rates exceeding this benchmark can trigger CMS financial penalties under HRRP.

Cardiac Surgery Subspecialty Certification (CSC)

The CSC certification, administered by AACN, validates the expertise of registered nurses who provide direct care to acutely and critically ill adult cardiac surgery patients within the first 48 hours post-operatively.

Questions

120 min

Time Limit

73%

To Pass

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