It was reported that noise oversensing on the right ventricular (rv) lead, resulting in inappropriate anti-tachycardia pacing (atp).Provocation maneuvers were performed, and all measurements remained within normal limits, with no noise present.The patient reported they put their cellphone in the shirt chest pocket, which is suspected to be electromagnetic interference (emi) and the source of the noise.The patient was instructed to keep a distance between the crt-d and cellphone, and further remote monitoring is expected.This crt-d remains in-service.No adverse patient effects were reported.
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