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)
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)
