Question

question 14 of 20
what is the length of a normal qrs complex?
0.20 - 0.26 sec (200 - 260 ms)
0.12 - 0.20 sec (120 - 200 ms)
< 0.08 sec (< 80 ms)
< 0.12 sec (< 120 ms)

Explanation:

The normal duration of a QRS complex on an electrocardiogram (ECG) is less than 0.12 seconds (or 120 milliseconds). This represents the depolarization of the ventricles.

Answer:

< 0.12 sec (< 120 ms)