Mixed Deck — All CET Topics Flashcards

A CET discovers that echo images are being stored without encryption on a shared network drive accessible outside the hospital. The appropriate regulatory action is to:

Answer: Report the security gap to the Privacy Officer or IT security team immediately

Identified security vulnerabilities must be reported through proper internal channels—the Privacy or Security Officer—who will initiate the required risk assessment.

On echocardiography, which pattern of ventricular filling is most consistent with constrictive pericarditis?

Answer: Respiratory variation in mitral inflow velocities >25%

Constrictive pericarditis characteristically shows >25% respiratory variation in mitral inflow E velocity due to ventricular interdependence.

Using the simplified Bernoulli equation, what is the pressure gradient across a valve if the peak velocity is 4 m/s?

Answer: 64 mmHg

The simplified Bernoulli equation is ΔP = 4V², so ΔP = 4 × (4)² = 4 × 16 = 64 mmHg.

Which Doppler pattern at the mitral valve is consistent with Grade I (impaired relaxation) diastolic dysfunction?

Answer: E/A 220 ms)

Grade I diastolic dysfunction (impaired relaxation) shows E/A ratio <1 and prolonged deceleration time due to slow myocardial relaxation.

Which publication bias phenomenon refers to studies with positive results being more likely to be published than those with null findings in echocardiographic research?

Answer: The file drawer problem

The 'file drawer problem' describes the tendency for null or negative studies to go unpublished, distorting the literature toward positive results.

What is a corrective action in Certified Echocardiography Technician quality systems?

Answer: A systematic response to eliminate causes of nonconformity and prevent recurrence

Corrective actions address root causes of quality issues to prevent recurrence, going beyond temporary fixes to create lasting improvement.

Which frequency range is typically used for adult transthoracic echocardiography?

Answer: 2-5 MHz

For adult transthoracic echocardiography, a frequency range of 2-5 MHz is typically used. Lower frequencies offer greater penetration depth, which is necessary to visualize the heart through the chest wall in adults. While higher frequencies provide better resolution, they have limited penetration, making the 2-5 MHz range optimal for balancing depth and image quality in adult studies.

Which technique is most effective for confirming a patient understands post-procedure TEE instructions?

Answer: Having the patient verbally repeat the key instructions in their own words (teach-back)

Teach-back is the evidence-based gold standard for confirming patient understanding of instructions.

Which artifact appears as multiple equally spaced lines parallel to a strong reflector and is caused by the ultrasound beam bouncing between two highly reflective surfaces?

Answer: Reverberation artifact

Reverberation artifacts occur when echoes bounce repeatedly between two reflective interfaces, creating false parallel lines at equal intervals on the image.

Why is documentation important in CET risk management?

Answer: It creates an audit trail and demonstrates due diligence

Documentation in risk management creates accountability, supports decision-making, and demonstrates professional due diligence.

What is the most effective communication approach for CET professionals?

Answer: Adapting communication style to the audience while maintaining accuracy

Effective CET professionals adapt their communication style to the audience's needs and knowledge level while ensuring accuracy and completeness.

What separates the left and right sides of the heart?

Answer: The septum

The septum is a muscular wall that divides the heart into its left and right sides. This crucial structure prevents the mixing of oxygenated blood (from the left side) with deoxygenated blood (from the right side). The interventricular septum separates the ventricles, and the interatrial septum separates the atria, ensuring efficient blood circulation.

When performing a phantom study to evaluate axial resolution, the technician should measure the minimum separation distance at which two targets appear as:

Answer: Two distinct, separate reflectors

Axial resolution is defined as the ability to distinguish two reflectors as separate entities along the beam axis; they must appear as distinct points.

A CET encounters a patient with a pacemaker exhibiting a demand pacing mode during TTE. Which risk must the sonographer be aware of related to the imaging environment?

Answer: Strong external electromagnetic fields near some echo equipment can transiently inhibit demand pacemakers

Demand pacemakers sense intrinsic electrical activity and can be transiently inhibited by electromagnetic interference generated near certain medical equipment.

Which Doppler method is the standard for estimating pulmonary artery systolic pressure non-invasively?

Answer: Tricuspid regurgitation peak velocity plus estimated right atrial pressure

PASP = 4(TRV)² + estimated RAP; the peak TR velocity is squared and multiplied by 4 (Bernoulli) and added to estimated right atrial pressure.

Which of the following best describes preload in cardiac physiology?

Answer: End-diastolic volume stretching the ventricular wall

Preload refers to the degree of ventricular wall stretch at end-diastole, related to end-diastolic volume and venous return.

In a patient with Marfan syndrome, which echocardiographic measurement is most critical for surgical planning?

Answer: Aortic root diameter at the sinuses of Valsalva

Aortic root diameter at the sinuses of Valsalva is the key measurement guiding surgical intervention in Marfan syndrome, with >4.5cm typically indicating surgery.

Libman-Sacks endocarditis on echocardiography is most commonly associated with which condition?

Answer: Systemic lupus erythematosus (SLE)

Libman-Sacks endocarditis consists of sterile, small, wartlike vegetations on both sides of valve leaflets and is pathognomonic of systemic lupus erythematosus.

Which of the following best describes the advantage of real-time three-dimensional (3D) echocardiography over conventional 2D imaging?

Answer: Volumetric acquisition allowing visualization of complex anatomy without geometric assumptions

3D echocardiography acquires a pyramidal volume of data, enabling accurate measurement of chamber volumes and valve morphology without relying on geometric models.

Which type of transducer is most appropriate for performing a standard adult transthoracic echocardiogram (TTE)?

Answer: Phased array low-frequency transducer

Phased array transducers (typically 2–5 MHz) are designed for cardiac imaging, providing the small footprint needed to image between ribs.