Adaptive cardiac resynchronization therapy for dilated cardiomyopathy with functional mitral regurgitation

• Main Authors: Yoshiki Nagata, MD, PhD, Yoichiro Nakagawa, MD, Yusuke Takeda, MD, Kenji Emoto, MD, Masaki Kinoshita, MD, Akio Chikata, MD, Michiro Maruyama, MD, PhD, Kazuo Usuda, MD, PhD
• Format: Article
• Language: English
• Published: Wiley 2017-10-01
• Series: Journal of Arrhythmia
• Subjects: Adaptive cardiac resynchronization therapy; Functional mitral regurgitation; Dilated cardiomyopathy; Left ventricular pacing
• Online Access: http://www.sciencedirect.com/science/article/pii/S1880427617300510
• ISSN: 1880-4276

We report the case of a man in his 60s who had dilated cardiomyopathy with severe functional mitral regurgitation. Four years after a cardiac resynchronization therapy (CRT) device with an implantable cardioverter defibrillator was implanted, this device was replaced with an adaptive CRT device because of battery consumption. Seven months after replacement of this device, the left ventricular pacing to right ventricular activation and the atrioventricular delay from automatic adjustments contributed to less functional mitral regurgitation. The findings from our case suggest that optimal CRT, by measuring intracardiac conduction parameters, is effective for functional mitral regurgitation.