CCI Pacemaker and Implantable Device Assessment 1

Question 1

In the NBG pacemaker coding system, what does the first letter represent?

Accepted Answer

Chamber paced

Answer

The first position of the NBG code identifies the chamber(s) being paced: O (none), A (atrium), V (ventricle), or D (dual).

Question 2

What does the letter 'R' in the fourth position of the NBG pacemaker code indicate?

Accepted Answer

Rate-responsive pacing

Answer

An 'R' in position IV indicates rate modulation, meaning the pacemaker adjusts its rate based on physiological demand using a sensor.

Question 3

Which pacemaker mode tracks atrial activity and paces the ventricle after a programmed AV delay?

Accepted Answer

VDD

Answer

VDD mode senses in both chambers but paces only the ventricle, tracking atrial activity and delivering ventricular pacing after the programmed AV delay.

Question 4

What is the most common primary indication for permanent pacemaker implantation?

Accepted Answer

Symptomatic bradycardia

Answer

Symptomatic bradycardia, including sick sinus syndrome and high-degree AV block causing symptoms, is the most common indication for permanent pacemaker implantation.

Question 5

Which vascular access site is most commonly associated with pneumothorax as a complication of pacemaker lead implantation?

Accepted Answer

Subclavian vein

Answer

Subclavian vein access carries the highest risk of pneumothorax due to its proximity to the lung apex; the cephalic vein cutdown is safer in this regard.

CCI - Cardiovascular Credentialing International Practice Test

CCI - Cardiovascular Credentialing International Practice Test

CCI Pacemaker and Implantable Device Assessment 1