Atrioventricular block

Atrioventricular block is a cardiac conduction disorder characterized by delayed or interrupted transmission of electrical impulses from the atria to the ventricles

Atrioventricular block is a cardiac conduction disorder characterized by delayed or interrupted transmission of electrical impulses from the atria to the ventricles Arising from structural degeneration, ischemia, inflammatory disease, or medication-induced impairment within the atrioventricular node or the His-Purkinje system, it affects cardiovascular hemodynamics across diverse patient populations Clinically, it is classified by electrophysiologic severity into first-degree (conduction delay),...

Atrioventricular block is a cardiac conduction disorder characterized by delayed or interrupted transmission of electrical impulses from the atria to the ventricles

Arising from structural degeneration, ischemia, inflammatory disease, or medication-induced impairment within the atrioventricular node or the His-Purkinje system, it affects cardiovascular hemodynamics across diverse patient populations

Clinically, it is classified by electrophysiologic severity into first-degree (conduction delay), second-degree (intermittent failure of impulse propagation), and third-degree or complete heart block (total absence of atrioventricular conduction accompanied by an independent escape rhythm)

Manifestations vary according to the degree and anatomical site of the block, ranging from asymptomatic electrocardiographic prolongation to profound bradycardia, syncope, fatigue, or hemodynamic collapse

Manifestations vary according to the degree and anatomical site of the block, ranging from asymptomatic electrocardiographic prolongation to profound bradycardia, syncope, fatigue, or hemodynamic collapse