AV block results in distal pacemaker sites generating the

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Multiple Choice

AV block results in distal pacemaker sites generating the

Explanation:
AV block stops impulses from the atria from reaching the ventricles, so the ventricles must be paced by a backup pacemaker located below the block. That distal focus is in the ventricular conducting system (His-Purkinje network), and when it takes over, the ventricles generate their own rhythm—the ventricular rhythm. This rhythm is typically slower and produces a wide QRS because activation starts in the ventricles rather than the normal rapid, coordinated atrioventricular conduction. So the distal pacemaker sites generate a ventricular rhythm.

AV block stops impulses from the atria from reaching the ventricles, so the ventricles must be paced by a backup pacemaker located below the block. That distal focus is in the ventricular conducting system (His-Purkinje network), and when it takes over, the ventricles generate their own rhythm—the ventricular rhythm. This rhythm is typically slower and produces a wide QRS because activation starts in the ventricles rather than the normal rapid, coordinated atrioventricular conduction. So the distal pacemaker sites generate a ventricular rhythm.

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