1. PVCs characteristically have a ____________ pause. a. Noncompensatory c. Compensatory b. Uncompensatory d. 0.30-seconds 2. The QRS complex corresponds to what electrical activity in the heart? a....

1. PVCs characteristically have a ____________ pause.

a. Noncompensatory c. Compensatory

b. Uncompensatory d. 0.30-seconds

2. The QRS complex corresponds to what electrical activity in the heart?

a. Ventricular depolarization

b. Atrial depolarization

c. Ventricular contraction

d. Atrial contraction

3. Pacemaker cells found in the Purkinje network in the ventricles have an intrinsic firing rate of ____________ BPM.

a. 20–30 c. 40–60

b. 60–80 d. 20–40