A disturbance of atrial impulse conduction, usually in the distal conduction system
Often associated with structural heart disease
Significant risk of hemodynamic instability, symptomatic bradycardia, and decompensation into Third Degree<unk>  Block and subsequent cardiac arrest
Risk of asystole 35% per year
Risk of asystole 35% per year
Second degree AV block type II
Differential includes ischemic events, electrolyte abnormalities, and medication overdoses in addition to rheumatologic conditions[3][4]
Third degree AV block
Anterior MI
First degree AV block
Rheumatic fever
Wide-complex tachycardia
Myocarditis