Find information on medical topics, symptoms, drugs, procedures, news and more, written for the health care professional.

Mobitz type II 2nd-degree atrioventricular block.

Mobitz type II 2nd-degree atrioventricular block.
Mobitz type II 2nd-degree atrioventricular block.

The PR interval remains constant. Beats are intermittently nonconducted, and QRS complexes dropped, usually in a repeating cycle of every 3rd (3:1 block) or 4th (4:1 block) P wave.