CMT Pacemaker Monitoring and Function

Question 1

In the NASPE/BPEG generic pacemaker code, what does the FIRST letter represent?

Accepted Answer

Chamber paced

Answer

The first letter in the pacemaker code indicates the chamber being paced (A=atrium, V=ventricle, D=dual).

Question 2

On a rhythm strip, a pacemaker spike is visible but is NOT followed by a P wave or QRS complex. This is called:

Accepted Answer

Failure to capture

Answer

Failure to capture occurs when the pacemaker fires but the electrical stimulus does not successfully depolarize the myocardium.

Question 3

In a VVI pacemaker, what does the second letter 'V' indicate?

Accepted Answer

The ventricle is sensed

Answer

In the VVI code, the second letter indicates the chamber being sensed — in this case, the ventricle.

Question 4

Which pacemaker mode paces the ventricle, senses the ventricle, and INHIBITS pacing output when a native beat is sensed?

Accepted Answer

VVI

Answer

VVI mode paces the ventricle (V), senses the ventricle (V), and inhibits (I) pacing when a native ventricular beat is detected.

Question 5

What is the primary advantage of a DDD pacemaker over a VVI pacemaker?

Accepted Answer

It maintains AV synchrony by pacing both chambers

Answer

DDD pacemakers maintain AV synchrony by sensing and pacing both atria and ventricles, preserving the atrial contribution to cardiac output.

(CMT) Certified Cardiac Monitor Technician Practice Test