Abstract
A 72 year old man with a history of nonischemic dilated cardiomyopathy with an ejection fraction of 20%, complete left bundle branch block and mechanical aortic and mitral valves. He has been having symptomatic Class III-IV heart failure symptoms and subsequently underwent implantation of a St Jude Medical Atlas + HF Model V-340 biventricular defibrillator. His symptoms of heart failure have improved significantly after implantation of his cardiac resynchronization device. However, he does note occasionally the sensation of palpitations with subjective worsening of dyspnea on exertion. His device interrogation revealed the event displayed in Fig. 125.1. What is the rhythm displayed? Why would this rhythm cause him to experience worsening heart failure symptoms? © Springer-Verlag London Limited 2011.
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CITATION STYLE
Ronald, L., Al-Ahmad, A., & Wang, P. J. (2011). Case 125. In Cardiac Electrophysiology: Clinical Case Review (pp. 483–484). Springer London. https://doi.org/10.1007/978-1-84996-390-9_125
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