The Q -T Interval Is the Time from the Onset

Multiple Choice

The Q -T interval is the time from the onset of the QRS complex to the end of the T wave which measures

A) the time of atrial systole.
B) the amount of time between each heartbeat.
C) the time of ventricular diastole.
D) the time of ventricular systole.
E) the time of atrial diastole.