T-wave oversensing and inappropriate shocks: A case report

Komandoor Srivathsan; Luis R. Scott; Gregory T. Altemose

doi:10.1093/europace/eun083

T-wave oversensing and inappropriate shocks: A case report

Komandoor Srivathsan, Luis R. Scott, Gregory T. Altemose

Cardiovascular Diseases

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

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.

Original language	English (US)
Pages (from-to)	552-555
Number of pages	4
Journal	Europace
Volume	10
Issue number	5
DOIs	https://doi.org/10.1093/europace/eun083
State	Published - May 1 2008

Keywords

Inappropriate shocks
Long QT syndrome
T-wave oversensing

ASJC Scopus subject areas

Cardiology and Cardiovascular Medicine
Physiology (medical)

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10.1093/europace/eun083

Cite this

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title = "T-wave oversensing and inappropriate shocks: A case report",

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.",

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AU - Altemose, Gregory T.

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AB - 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.

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T-wave oversensing and inappropriate shocks: A case report

Abstract

Keywords

ASJC Scopus subject areas

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