A Normal Q-T Interval is

Question

A normal Q-T interval is .
A) 0.08 sec when the heart rate is 50 beats/min
B) 0.16-0.18 sec when the heart rate is 60 beats/min
C) 0.32-0.38 sec when heart rate is 70 beats/min
D) 1.0-2.0 sec when heart rate is 80 beats/min

Accepted Answer

The normal Q-T interval is typically between 0.32 to 0.44 seconds, and it varies with heart rate. At a heart rate of 70 beats/min, a Q-T interval of 0.32-0.38 sec is within the normal range.