title: [Biventricular pacing using two pacemakers and triggered VVT mode in patients with atrial fibrillation and congestive heart failure: a case report].
abstract: A 76-year-old female had undergone implantation of a single chamber pacemaker for sick sinus syndrome 20 years previously. She developed chronic atrial fibrillation and required repeated admission due to congestive heart failure. She had significant mitral and tricuspid regurgitation. Paradoxical movement of the intraventricular septum was severe. Due to right ventricular apical pacing, significant interventricular conduction delay was present with a paced QRS duration of 189 msec. The left ventricular pacing lead was positioned via the coronary sinus. The mode of the previously implanted pacemaker was set at VVT. Biventricular pacing could be achieved even in intrinsic beats by VVT mode. The battery life time was improved. This method is useful in patients with conventional pacemakers.
authors.affiliation: Second Department of Internal Medicine, Yokohama City University School of Medicine, Fukuura 3-9, Kanazawa-ku, Yokohama 236-0004.
authors.forename: Youhei
authors.initials: Y
authors.lastname: Yamakawa
authors.forename: Toshiyuki
authors.initials: T
authors.lastname: Ishikawa
authors.forename: Kazuaki
authors.initials: K
authors.lastname: Uchino
authors.forename: Shinichi
authors.initials: S
authors.lastname: Sumita
authors.forename: Yasuyuki
authors.initials: Y
authors.lastname: Mochida
authors.forename: Toshiaki
authors.initials: T
authors.lastname: Ebina
authors.forename: Shunichi
authors.initials: S
authors.lastname: Kobayashi
authors.forename: Tsukasa
authors.initials: T
authors.lastname: Kobayashi
authors.forename: Kohei
authors.initials: K
authors.lastname: Matsushita
authors.forename: Yasuo
authors.initials: Y
authors.lastname: Okusu
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Tanaka
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Kitamura
authors.forename: Satoshi
authors.initials: S
authors.lastname: Umemura
mesh_terms: D000368:Aged; D001281:Atrial Fibrillation / Q000209:etiology / Q000628:therapy*; D004562:Electrocardiography; D005260:Female; D006333:Heart Failure / Q000150:complications*; D006352:Heart Ventricles / Q000503:physiopathology; D006801:Humans; D010138:Pacemaker, Artificial