The reconfirmation algorithm in third-generation ICDs can lead to inadequate shocks when VT spontaneously converts to AF with a slow ventricular response.
Alerts clinicians to possible inadequate shocks during VT-to-AF conversion; leaves open whether reconfirmation algorithms require modification in third-generation ICDs.
We report on inadequate shocks delivered by an ICD for VT converting spontaneously to AF with slow ventricular response. This represents a correct behavior of the reconfirmation algorithm, as the detection of intervals longer than the fibrillation detection interval and shorter than the bradycardia escape interval is required to inhibit the shock.
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MATTKE et al. (1997) studied this question.
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