1
Q
A
A fib
2
Q
A
heart block
3
Q
A
normal
4
Q
A
premature ventricular contraction
5
Q
A
V fib
6
Q
p wave
A
atrial depolarization
7
Q
QRS complex
A
ventricular depolarization
8
Q
T wave
A
ventricular repolarization
9
Q
QRS interval
A
atrial repolarization
10
Q
PQ segment
A
atrial systole
11
Q
ST segment
A
ventricular systole
12
Q
A
