CMC CMC Cardiac Diagnostics & Imaging 2

Question 1

What is the normal range for left ventricular ejection fraction (LVEF) in adults?

Accepted Answer

55–70%

Answer

Normal LVEF is 55–70%, reflecting adequate systolic function with more than half the ventricular volume ejected per beat.

Question 2

Diastolic dysfunction identified on echocardiography primarily reflects impairment of which cardiac process?

Accepted Answer

Impaired ventricular relaxation and filling

Answer

Diastolic dysfunction reflects abnormal myocardial relaxation causing elevated filling pressures, which can exist even with preserved EF.

Question 3

During a stress echocardiogram, the appearance of new regional wall motion abnormalities indicates what?

Accepted Answer

Myocardial ischemia from inadequate coronary perfusion

Answer

New wall motion abnormalities during stress indicate regions of myocardium becoming ischemic from flow-limiting coronary stenoses.

Question 4

The echocardiographic hallmark of cardiac tamponade is which finding?

Accepted Answer

Pericardial effusion with diastolic collapse of right-sided chambers

Answer

Cardiac tamponade is diagnosed by pericardial effusion causing diastolic collapse of the right atrium and ventricle due to elevated intrapericardial pressure.

Question 5

On a standard Bruce protocol exercise stress test, what constitutes a positive result for ischemia?

Accepted Answer

≥1mm horizontal or downsloping ST depression at 80ms after the J point

Answer

≥1mm horizontal or downsloping ST depression at 80ms post-J point in ≥1 lead is the standard diagnostic criterion for exercise-induced ischemia.

CMC - Cardiac Medicine Certification Practice Test

CMC - Cardiac Medicine Certification Practice Test

CMC CMC Cardiac Diagnostics & Imaging 2