title: Ventriculoatrial block during a narrow-QRS tachycardia: what is the tachycardia mechanism?--IV.
authors.affiliation: Department of Internal Medicine, University of Michigan Medical Center, Ann Arbor 48109-0022, USA.
authors.forename: F
authors.initials: F
authors.lastname: Morady
mesh_terms: D000328:Adult; D004562:Electrocardiography; D006327:Heart Block / Q000209:etiology* / Q000503:physiopathology; D006801:Humans; D008297:Male; D013617:Tachycardia, Supraventricular / Q000150:complications* / Q000503:physiopathology