Complete atrioventricular block is a relatively uncommon arrhythmia that is nonetheless increasingly (PACE 2012; 35:1395-1405 complete atrioventricular block, atrioventricular block etiology, cardiac conduction
IntroductionComplete heart block, also referred to as thirddegree heart block or third-degree atrioventricular (AV) block, is a disorder of the cardiac conduction system where there is complete dissociation of the atrial and ventricular activity due to the absence of conduction through the atrioventricular node (AVN) or His-Purkinje system. Although Mobitz I second-degree AV block is observed in 1-2% of healthy young people, especially during sleep, the prevalence of third-degree AV block is only 0.02% in the United States and 0.04% worldwide.1,2 Its incidence increases with advancing age (highest in people older than 70 years), despite an early peak in infancy and early childhood due to congenital