1. The electrocardiogram is a diagnostic tool that is utilized to: a. Determine pulse rate b. Detect valvular dysfunction c. Evaluate electrical activity in the heart d. Determine whether the heart...

1. The electrocardiogram is a diagnostic tool that is utilized to:

a. Determine pulse rate

b. Detect valvular dysfunction

c. Evaluate electrical activity in the heart

d. Determine whether the heart muscle is contracting

2. The PR interval represents the time interval necessary for the impulse to travel from the SA node to the AV node and should normally be ________________________ seconds.

a. 0.01–0.10        c. 0.08–0.12

b. 0.02–0.12        d. 0.12–0.20