Case 107

Paul A. Friedman, Charles D. Swerdlow

Research output: Chapter in Book/Report/Conference proceedingChapter


A 62-year-old woman had previously received an implantable defibrillator due to a history of ventricular tachycardia. She presented following a shock that was not preceded by symptoms. A fracture of the right ventricular 6936 Transvene™ lead was identified as causing noise that led to inappropriate shock. Due to this, the 6936 lead was abandoned, the proximal electrodes capped, and a new Sprint™ 6945 lead placed in the right ventricular apex, taking care to avoid mechanical contact with the abandoned lead. The morning after implantation of the new lead, a pacing threshold test is performed (Fig. 107.1). On the basis of this tracing, what is your diagnosis?

Original languageEnglish (US)
Title of host publicationCardiac Electrophysiology
Subtitle of host publicationClinical Case Review
PublisherSpringer London
Number of pages3
ISBN (Print)9781849963893
StatePublished - 2011

ASJC Scopus subject areas

  • General Medicine


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