EXAM QUESTIONS WITH 100% VERIFIED
ANSWERS
What wave is normal for it to not be there on an EKG?
Q Wave
What does the P wave represent?
atrial depolarization (atrial contraction)
Where does the P wave originate?
SA node
What does the QRS complex represent?
ventricular depolarization (contraction)
How long is the PR interval?
, 0.12-0.20 seconds (3-5 small boxes)
*Measure from the beginning of the P wave to beginning of the
QRS
How long is the QRS complex?
0.10 seconds or less
*Measure from the beginning of the QRS to end of QRS
How long is the QT interval?
≤ 0.40 seconds
*Varies according to the rate. Measure from the beginning of
the QRS to the end of the T
What are sinus rhythms?
rhythms that originate in the SA node
What are the characteristics of sinus bradycardia?