title: Spontaneous manifestation of dual AV nodal pathways resulting in complex patterns of AV conduction.
abstract: Dual intranodal pathways are not uncommonly demonstrated at electophysiological study especially in patients with intranodal re-entrant tachycardias. This type of tachycardia is the most common spontaneous manifestation (albeit indirect) of dual AV nodal pathways. Other forms of spontaneous expression of dual atrio-His conduction are rare. In this report we describe a patient who exhibited complex atrioventricular conduction patterns over two intranodal pathways.
mesh_terms: D000328:Adult; D001283:Atrioventricular Node / Q000503:physiopathology*; D002036:Bundle of His / Q000503:physiopathology; D002304:Cardiac Pacing, Artificial; D004562:Electrocardiography; D005080:Exercise Test; D006327:Heart Block / Q000209:etiology / Q000503:physiopathology; D006329:Heart Conduction System / Q000503:physiopathology*; D006801:Humans; D008297:Male; D013610:Tachycardia / Q000175:diagnosis / Q000209:etiology / Q000503:physiopathology*