[Biventricular pacing using two pacemakers and triggered VVT mode in patients with atrial fibrillation and congestive heart failure: a case report].
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.
Yamakawa
Youhei
Y
Second Department of Internal Medicine, Yokohama City University School of Medicine, Fukuura 3-9, Kanazawa-ku, Yokohama 236-0004.
Ishikawa
Toshiyuki
T
Uchino
Kazuaki
K
Sumita
Shinichi
S
Mochida
Yasuyuki
Y
Ebina
Toshiaki
T
Kobayashi
Shunichi
S
Kobayashi
Tsukasa
T
Matsushita
Kohei
K
Okusu
Yasuo
Y
Tanaka
Yutaka
Y
Kitamura
Yutaka
Y
Umemura
Satoshi
S
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