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Twiddler's syndrome of an implantable cardioverter defibrillator
  1. Eric Chong,
  2. Aldo C Rinaldi
  1. Correspondence to Eric Chong, Alexandra Hospital, 378 Alexandra Road, 159964, Singapore; ericchong80{at}

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A 60-year-old Caucasian man underwent implantation of a biventricular implantable cardioverter defibrillator (ICD) for primary prevention of his underlying severe ischaemic cardiomyopathy. One year later, he presented with a problem of left-ventricular lead failure. He also received inappropriate ICD shocks as a result of poor R-wave sensing in the ventricular leads and double counting from the right atrium. A chest …

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