AACN test question and answers updated 2026

AACN test question and answers
updated 2026
Endocardium -Answer inner layer of the
heart


Myocardium -Answer thick, middle layer of
the heart


Epicardium -Answer outer surface of the
heart muscle


RCA -Answer extends to the back of the
heart and perfuses the posterior of the
heart


ECG prep -Answer alcohol before skin
prep


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

, Vertical axis -Answer voltage--small box =
0.1 mv


Horizontal axis -Answer time--small box =
0.4 sec


How often are tick marks? -Answer every
3 seconds


Isoelectric line -Answer electrical charges
in the heart are equal


5 lead -Answer smoke over fire, clouds
over grass, brown in the middle


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