CCT CCT Cardiac Diagnostic Testing & Equipment 1

Question 1

During a stress echocardiogram, new wall motion abnormalities during exercise indicate:

Accepted Answer

Myocardial ischemia in the affected territory

Answer

New regional wall motion abnormalities that appear during exercise stress echo indicate inadequate blood supply to that myocardial segment, consistent with ischemia.

Question 2

Which cardiac biomarker is the most specific and sensitive indicator of myocardial injury?

Accepted Answer

Troponin I or T

Answer

Cardiac troponins (I and T) are highly specific to myocardial tissue and rise within 2–4 hours of injury, remaining elevated for up to 14 days.

Question 3

An echocardiogram reports an ejection fraction (EF) of 35%. This finding is consistent with:

Accepted Answer

Reduced ejection fraction heart failure (HFrEF)

Answer

A normal ejection fraction is 55–70%; an EF of 35% indicates severely reduced ventricular systolic function, classified as HFrEF.

Question 4

During cardiac catheterization, a pressure gradient of 50 mmHg across the aortic valve indicates:

Accepted Answer

Severe aortic stenosis

Answer

A peak-to-peak or mean gradient greater than 40–50 mmHg across the aortic valve during catheterization is diagnostic of severe aortic stenosis.

Question 5

The P-R interval on a 12-lead ECG represents:

Accepted Answer

Time for impulse conduction from atria through the AV node to ventricles

Answer

The PR interval measures the total time from atrial depolarization (P wave onset) through AV nodal delay to the start of ventricular depolarization.

(CCT) Certified Cardiac Technician Practice Test

(CCT) Certified Cardiac Technician Practice Test

CCT CCT Cardiac Diagnostic Testing & Equipment 1