AACN test Question With Correct Answers 2025

AACN test Question With Correct
Answers 2025

Endocardium - correct answers ✅✅inner layer of the heart


Myocardium - correct answers ✅✅thick, middle layer of the
heart


Epicardium - correct answers ✅✅outer surface of the heart
muscle


RCA - correct answers ✅✅extends to the back of the heart and
perfuses the posterior of the heart


ECG prep - correct answers ✅✅alcohol before skin prep


Time it takes the paper to come out of the EKG machine? - correct
answers ✅✅25 mm/s


Vertical axis - correct answers ✅✅voltage--small box = 0.1 mv


Horizontal axis - correct answers ✅✅time--small box = 0.4 sec


How often are tick marks? - correct answers ✅✅every 3 seconds


Isoelectric line - correct answers ✅✅electrical charges in the
heart are equal

, AACN test Question With Correct
Answers 2025


5 lead - correct answers ✅✅smoke over fire, clouds over grass,
brown in the middle


QT prolongation - correct answers ✅✅- can cause torsades
- can be affected by drugs (antibiotics, Antidysrhythmic ,
antipsychotic drugs)


Atrial pacemaker fires... - correct answers ✅✅before the P wave


Ventricular pacemaker fires... - correct answers ✅✅before the
QRS complex


Threshold - correct answers ✅✅the lowest amount of energy
needed to produce a "capture"


Failure to pace - correct answers ✅✅no pacemaker activity, it is
not firing. This could be a sensitivity problem or a mechanical
issue


Failure to capture - correct answers ✅✅the pacemaker is firing
but no P wave or QRS complex follows the pacer spike. The
impulse is not strong enough to depolarize the heart (increasing
the mA will troubleshoot this problem)