T-wave oversensing and inappropriate shocks: a case report.

Publication/Presentation Date

5-1-2008

Abstract

A 27-year-old male with congenital long QT syndrome, SCN5A mutation experienced recurrent inappropriate exercise-related implantable cardioverter defibrillator (ICD) shocks. This device showed T-wave oversensing with double, which lead to these device discharges. Dynamic T-wave oversensing was reproducibly provoked at exercise treadmill testing and was confirmed as the mechanism leading to double counting. The insertion of a new pacing and sensing lead with increased R-wave amplitude did not solve the problem. Exchanging the existing ICD generator with one capable of automatic sensitivity control (Biotronik, Lexos DR, Biotronik, Berlin, Germany) completely eliminated T-wave oversensing and inappropriate shocks.

Volume

10

Issue

5

First Page

552

Last Page

555

ISSN

1532-2092

Disciplines

Medicine and Health Sciences

PubMedID

18442965

Department(s)

Department of Medicine

Document Type

Article

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