title: Alternating narrow and wide complex tachycardia: what is the mechanism?
authors.affiliation: Second Department of Medicine, Nihon University School of Medicine, Oyaguchi-kami, Tokyo, Japan. iwatanab@med.nihon-u.ac.jp
authors.forename: Ichiro
authors.initials: I
authors.lastname: Watanabe
authors.forename: Yasuo
authors.initials: Y
authors.lastname: Okumura
authors.forename: Toshiko
authors.initials: T
authors.lastname: Nakai
authors.forename: Satoshi
authors.initials: S
authors.lastname: Saito
authors.forename: Yukio
authors.initials: Y
authors.lastname: Ozawa
authors.forename: Katsuo
authors.initials: K
authors.lastname: Kanmatsuse
mesh_terms: D000328:Adult; D002037:Bundle-Branch Block / Q000175:diagnosis; D004562:Electrocardiography / Q000145:classification; D006801:Humans; D008297:Male; D013610:Tachycardia / Q000503:physiopathology*; D013611:Tachycardia, Atrioventricular Nodal Reentry / Q000175:diagnosis; D016277:Ventricular Function, Left / Q000502:physiology