AACN test questions with answers.

AACN test questions with answers

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



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)