An unusual resolution of T-wave oversensing in an implantable cardioverter defibrillator in a child with long QT syndrome.
T-wave oversensing poses a clinical challenge often resulting in inappropriate therapies and shocks. T-wave oversensing can often be resolved by certain programmable adjustments while accepting a small risk of undersensing ventricular fibrillation. The following case depicts a girl with LQT whose transvenous defibrillator repeatedly demonstrated T-wave oversensing despite optimizing various programmable features and a separate pace/sense lead. Utilization of an LV epicardial pace/sense lead with stable R-waves affirmed an unusual resolution of T-wave oversensing and avoidance of inappropriate shocks.
Cohen
Mitchell I
MI
Arizona Pediatric Cardiology Consultants & Pediatrix, 1920 E. Cambridge Ave., Suite 301, Phoenix, AZ 85006, USA. Mitchell_Cohen@Pediatrix.com
Anagnostopoulos
Petros V
PV
Papez
Andrew
A
D001146:Arrhythmia, Sinus / Q000209:etiology* / Q000517:prevention & control*; D002648:Child; D017147:Defibrillators, Implantable / Q000009:adverse effects*; D004554:Electric Countershock / Q000009:adverse effects*; D005260:Female; D006801:Humans; D008133:Long QT Syndrome / Q000150:complications* / Q000517:prevention & control*; D016896:Treatment Outcome