AF Equipment Operation & Maintenance 2

Question 1

When performing synchronized cardioversion for AF, the sync mode aligns the shock delivery with which ECG feature?

Accepted Answer

The R wave (QRS complex)

Answer

Synchronized cardioversion delivers the shock on the R wave to avoid the vulnerable T-wave period, which could induce ventricular fibrillation.

Question 2

The recommended initial biphasic energy setting for elective cardioversion of persistent AF in most adults is:

Accepted Answer

100–120 joules

Answer

Current guidelines recommend starting with 100–120 joules for biphasic cardioversion of AF, escalating if the initial shock fails.

Question 3

Which defibrillator self-test function must be confirmed as PASS before performing cardioversion?

Accepted Answer

All of the above

Answer

Pre-procedure checks should confirm battery level, electrode impedance within acceptable range, and a passed internal diagnostic test.

Question 4

Anterior-posterior pad placement for AF cardioversion is preferred over anterior-lateral because it:

Accepted Answer

Delivers higher current density through atrial tissue

Answer

Anterior-posterior placement directs the electrical vector more directly through the atria, improving shock efficacy.

Question 5

After a failed cardioversion attempt, the clinician should reassess pad contact and then:

Accepted Answer

Escalate energy to the next level per protocol

Answer

Escalating energy in a stepwise fashion is standard protocol when initial cardioversion attempts fail.

(AF) Atrial Fibrillation Certification Practice Test