ARDMS AE Adult Echocardiography Examination AE-Adult-Echocardiography Exam Questions

Answer : A

Cardiac catheterization with coronary angiography is considered the gold standard for the assessment and diagnosis of coronary artery disease (CAD). It provides direct visualization of coronary artery luminal stenosis and allows for therapeutic intervention if needed.

While cardiac magnetic resonance imaging (MRI), stress echocardiography, and myocardial perfusion imaging are valuable non-invasive modalities for ischemia detection and functional assessment, none replace the anatomical and interventional capabilities of invasive angiography.

This is well established in the 'Textbook of Clinical Echocardiography, 6e', Chapter on Ischemic Heart Disease and Diagnostic Modalities20:400-405Textbook of Clinical Echocardiography.

Answer : D

Comprehensive and Detailed Explanation From Exact Extract:

The parasternal short axis view at the level of the aortic valve is optimal for evaluating valve morphology, including detection of bicuspid aortic valve (BAV). This view clearly visualizes the valve leaflets en face during systole.

Right sternal border and apical views provide hemodynamic information but are less optimal for detailed valve anatomy. Apical long axis is better for left ventricular and outflow tract evaluation but limited for valve leaflet number.

This is described in the 'Textbook of Clinical Echocardiography, 6e', Chapter on Aortic Valve Morphology and Congenital Anomalies20:350-355Textbook of Clinical Echocardiography.

Answer : B

The echocardiographic video shows hypokinesis or akinesis of the inferolateral wall of the left ventricle. This myocardial territory is predominantly supplied by the left circumflex coronary artery.

The right coronary artery primarily supplies the inferior wall and right ventricle. The left anterior descending artery supplies the anterior and septal walls. The posterior descending artery supplies the inferior wall, usually supplied by the right coronary artery or sometimes the circumflex.

These segmental coronary territories are described in ASE stress echocardiography and regional wall motion assessment guidelines12:ASE Stress Echocardiography Guidelinesp.300-31016:Textbook of Clinical Echocardiography, 6ep.380-385.

Answer : A

Assessment of left ventricular diastolic function by echocardiography involves evaluating mitral inflow velocities with pulsed wave Doppler (E and A waves), pulmonary venous flow patterns (systolic and diastolic waves), and tissue Doppler imaging of the mitral annulus to measure early diastolic (e') velocities.

This combination allows differentiation of normal versus abnormal relaxation, elevated filling pressures, and grading of diastolic dysfunction. The myocardial performance index evaluates global ventricular function but does not specifically require these Doppler measures. Systolic function is assessed mainly by ejection fraction and wall motion. Mitral regurgitation severity uses color Doppler and vena contracta measurements.

This multiparameter diastolic function evaluation is outlined in the 'Textbook of Clinical Echocardiography, 6e', Chapter on Diastolic Function Assessment20:210-220Textbook of Clinical Echocardiography.

Answer : B

Comprehensive and Detailed Explanation From Exact Extract:

The video shows a parasternal long-axis view of the left ventricle and mitral valve with the anterior leaflet of the mitral valve moving abnormally toward the interventricular septum during systole. This systolic anterior motion (SAM) of the mitral valve is characteristic of hypertrophic obstructive cardiomyopathy (HOCM) and contributes to left ventricular outflow tract obstruction.

Aortic root dilatation and left atrial elongation are structural findings seen in other views. Mid-anteroseptal hypokinesis is a regional wall motion abnormality not clearly visualized in this clip.

This echocardiographic sign is critical in diagnosing and managing HOCM and is discussed extensively in ASE guidelines and clinical echocardiography texts16:Textbook of Clinical Echocardiography, 6ep.350-35512:ASE Cardiomyopathy Guidelinesp.120-130.

Answer : D

Comprehensive and Detailed Explanation From Exact Extract:

The left ventricular dP/dt is a measure of the rate of rise in left ventricular pressure during isovolumic contraction, which reflects systolic function. It is derived from Doppler echocardiography by measuring the time interval between mitral regurgitant jet velocities of 1 m/s and 3 m/s. Using the simplified Bernoulli equation, the pressure gradient at each velocity is calculated, and the rate of pressure rise (dP/dt) is calculated by dividing the pressure difference by the time interval between these velocities.

A normal left ventricular dP/dt is generally considered to be greater than 1200 mmHg/s. Values lower than this indicate impaired systolic function, as the ventricle is slower to generate pressure during contraction.

For example, a measured time interval of 36 milliseconds (0.036 seconds) between the MR velocities of 1 and 3 m/s corresponds to a dP/dt of approximately 889 mmHg/s, which is mildly reduced, indicating some systolic dysfunction.

The exact extract from the 'Textbook of Clinical Echocardiography, 6e' states that normal dP/dt values are typically above 1000 mmHg/s, with >1200 mmHg/s considered a robust indicator of normal systolic function. This measure is useful but requires a measurable mitral regurgitation jet and consistent alignment of the ultrasound beam. Variability in measurement can occur based on technical factors, but the dP/dt remains a useful parameter to quantify systolic function noninvasively.

Answer : B

Comprehensive and Detailed Explanation From Exact Extract:

Contrast echocardiography is recommended to enhance the visualization of left ventricular endocardial borders when the image quality is suboptimal. Specifically, contrast agents should be used when at least three contiguous left ventricular segments are poorly visualized on standard two-dimensional imaging. This approach improves the accuracy and reliability of assessing regional wall motion and global systolic function.

The use of contrast is particularly important during stress echocardiography to ensure detection of ischemic segments, which might otherwise be missed due to inadequate image quality. Studies suggest that contrast enhancement is required in approximately 30% to 50% of stress echocardiographic studies depending on patient factors and laboratory practices.

These recommendations are detailed in the echocardiography guidelines and in the 'Textbook of Clinical Echocardiography, 6e' (Chapter 8: Coronary Artery Disease and Stress Echocardiography) which emphasize the utility of contrast agents for better endocardial border definition when at least three segments are not clearly seen .