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Recurrent AICD shocks in a 60-year-old man
  1. Colin Yeo,
  2. Kelvin CK Wong
  1. Correspondence to Dr Colin Yeo, Department of Cardiology, Changi General Hospital, 2 Simei Street 3, Singapore 529889, Singapore; yeocolin21{at}gmail.com

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Clinical introduction

We present the case of a 60-year-old man with history of non-ischaemic cardiomyopathy with left ventricular ejection fraction of 40%. His baseline surface 12-lead ECG shows sinus rhythm with PR interval of 170 ms, no evidence of pre-excitation and a normal QT interval. He had a single-chamber automated implantable cardiac defibrillator (AICD) inserted for sustained wide complex tachycardia associated with palpitations. Subsequently, he presented with recurrent shocks from the AICD coming on at rest despite treatment with amiodarone. He did not experience any significant cardiovascular symptoms except for mild palpitations. There were no reversible causes found …

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