Biventricular pacing worsened dyssynchrony in heart failure patient with right-bundle branch block

Masaki Tanabe, Kaoru Dohi, Katsuya Onishi, Tomoyuki Nakata, Yuichi Sato, Hiroshi Nakajima, Takeshi Takamura, Masatoshi Miyahara, Mashio Nakamura, Kan Takeda, Masaaki Ito
International Journal of Cardiology 2010 February 4, 138 (3): e47-50
The use of a biventricular pacing system for patients with complete right-bundle branch block (CRBBB) is still controversial. Although cardiac resynchronization therapy-defibrillator (CRT-D) was implanted in a heart failure patient with CRBBB, dyssynchrony worsened and stroke volume decreased, and this patient was re-admitted due to exacerbated heart failure. Therefore, evaluation of dyssynchrony and cardiac function after implantation of a biventricular pacing system may be needed in patients with atypical indications for CRT.


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