T wave oversensing can trigger ventricular rate stabilization algorithms in ICDs leading to inappropriate pacing, which can be corrected by adjusting device sensitivity.
May allow noninvasive correction of T-wave oversensing-induced inappropriate ICD pacing; single case leaves open need for prospective validation.
Preventive pacing algorithms designed to eliminate the pause that follows a premature ventricular depolarization have been incorporated in current implantable defibrillators. We report a patient in whom intermittent T wave oversensing frequently invoked the ventricular rate stabilization algorithm and resulted in periods of inappropriate VVI pacing. The problem was solved by decreasing the maximum sensitivity from 0.3 mV to 0.45 mV. Implant testing had revealed adequate sensing of ventricular fibrillation with a maximum sensitivity of 1.2 mV.
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Sergio L. Pinski (2000) studied this question.
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