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 | |
| State | Published - May 2008 |
Keywords
- Inappropriate shocks
- Long QT syndrome
- T-wave oversensing
ASJC Scopus subject areas
- Cardiology and Cardiovascular Medicine
- Physiology (medical)
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