PR Intervals of Greater Than 0

Multiple Choice

PR intervals of greater than 0.20 are indicative of:

A) a pacemaker site which is either in or close to the AV junction.
B) an intermittent blocking of the impulse as it passes through the AV node.
C) a delay in conduction of the impulse between the SA node and the ventricles.
D) an increased rate of impulse discharge from the SA node.