Third-degree (complete) atrioventricular block with wide QRS escape rhythm

The P waves are completely dissociated from the QRS complexes and the PR intervals are variable. The atrial or PP rate (75 beats per minute) is faster than the ventricular or RR rate (30 beats per minute), establishing complete atrioventricular blockade as the etiology. The QRS complexes are wide indicating that the escape rhythm is ventricular.

Normal rhythm strip in lead II. The PR interval is 0.15 sec and the QRS duration is 0.08 sec. Both the P and T waves are upright.