Shock termination of tachycardia

Paul A. Friedman, Charles D. Swerdlow

Research output: Chapter in Book/Report/Conference proceedingChapter


A 68-year-old man with ischemic cardiomyopathy (NYHA Class II, left-ventricular ejection fraction 26%) underwent implantation of a prophylactic dual-chamber ICD (Medtronic EnTrust™ D154ATG) 2 years ago. His medications include lisinopril 20 mg daily, carvedilol 12.5 mg daily, simvastatin 40 ms daily, and aspirin 325 mg daily. The ICD was programmed for single zone detection. Six months ago, he had presyncope followed by a shock. ICD interrogation showed ineffective antitachycardia pacing followed by a successful shock for VT with AV dissociation at cycle length 240 ms. Diagnosis and management are discussed.

Original languageEnglish (US)
Title of host publicationCardiac Electrophysiology
Subtitle of host publicationClinical Case Review
PublisherSpringer International Publishing
Number of pages5
ISBN (Electronic)9783030285333
ISBN (Print)9783030285319
StatePublished - Jan 1 2020


  • Aspirin
  • Cardiomyopathy
  • Carvedilol
  • Pacemaker
  • Simvastatin
  • Warfarin

ASJC Scopus subject areas

  • General Medicine


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