Major etiologies of bradyarrhythmias

Sinus bradycardia and its variants - including sinoatrial block

Atrioventricular heart block or dissociation - can occur with sinus rhythm or atrial fibrillation or flutter

Second or third degree AV block

Isorhythmic AV dissociation and related variants

Wandering atrial pacemaker

Junctional (AV nodal) escape rhythms - can occur with sinus rhythm or atrial fibrillation or flutter

Ventricular escape (idioventricular) rhythms

Etiologies_of_bradyarrhythm.htm

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