Complete heart block lacking functional anatomical impairment in the conduction system

ABSTRACT

Complete heart block also known as third-degree atrioventricular block [AV block] is a condition in which there is no conduction of the impulse produce in the sinoatrial node [SA node] in the atrium to the ventricle.[1] Complete heart block may be congenital or acquired. There are certain conditions which can lead to third-degree heart block, commonest being the coronary ischemia. Initially there may be first degree atrioventricular block [AV block], second degree atrioven-tricular block [AV block], bundle branch block or bifasicular block ultimately leading to complete heart block. In most cases third-degree AV block presents with acute myocardial infarction.[2,3] A 45 years old male with no known comorbids and without any risk factors for coronary heart disease coming with a short duration of complaints of dizziness and vertigo was diagnosed as a case of complete heart block without any functional and anatomical impairment in conduction system