title: Intra-hisian block associated with unusual etiologies.
abstract: One hundred and sixty-nine patients underwent electrophysiologic study for atrioventricular block. Forty-five (27%) had intra-Hisian block. Four of these 45 patients had unusual etiologies: rheumatoid arthritis, cysticercosis cellulosae, Behcet's disease, and Takayasu aorto-arteritis. Their clinical and electrophysiologic features are described in detail.
mesh_terms: D000328:Adult; D001172:Arthritis, Rheumatoid / Q000150:complications; D001528:Behcet Syndrome / Q000150:complications; D002036:Bundle of His / Q000503:physiopathology*; D003551:Cysticercosis / Q000150:complications; D004562:Electrocardiography; D005260:Female; D006327:Heart Block / Q000209:etiology* / Q000503:physiopathology; D006329:Heart Conduction System / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D013625:Takayasu Arteritis / Q000150:complications