Mobitz type II second-degree atrioventricular block
Mobitz type II second-degree atrioventricular block
Mobitz type II second-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.

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