CCT CCT Cardiac Diagnostic Testing & Equipment 3

Question 1

ST-segment depression in leads V4–V6 during exercise stress testing is most indicative of:

Accepted Answer

Left anterior descending (LAD) artery ischemia

Answer

Normal exercise response

Answer

Right bundle branch block

Answer

Benign early repolarization

Question 2

When preparing a patient for a nuclear stress test, the cardiac technician should ask about use of which substances that must be withheld beforehand?

Accepted Answer

Caffeine and certain heart medications that affect the test

Answer

Vitamin supplements

Answer

Antacids

Answer

Skin lotions

Question 3

A wide QRS complex (>120 ms) on ECG in a patient with known cardiac disease most likely represents:

Accepted Answer

Bundle branch block or ventricular conduction delay

Answer

Normal sinus rhythm

Answer

Atrial flutter

Answer

Junctional escape rhythm

Question 4

During cardiac catheterization, which artery is most commonly used as vascular access in the United States?

Accepted Answer

Radial artery

Answer

Femoral artery

Answer

Brachial artery

Answer

Carotid artery

Question 5

A normal pulmonary capillary wedge pressure (PCWP) range during right heart catheterization is:

Accepted Answer

6–12 mmHg

Answer

20–30 mmHg

Answer

35–45 mmHg

Answer

1–3 mmHg

Question 6

A QTc interval greater than 500 ms on a 12-lead ECG is clinically significant because it indicates:

Accepted Answer

Increased risk of torsades de pointes ventricular tachycardia

Answer

Faster-than-normal conduction

Answer

Atrial enlargement

Answer

Inferior wall ischemia