Boston scientific received information that this right ventricular (rv) lead had evidence of oversensed noise which could be reproduced with pocket manipulation.The patient reported feeling dizzy.The patient has complete heart block and is pacemaker dependent.The rv sensitivity was reprogrammed and the patient was referred to their implanting physician for further assessment.The implanting physician elected to revise the pacemaker system.Upon opening the pocket, the device-to-lead connections were assessed and confirmed appropriate.Attempts to create noise with pocket and lead manipulation was unsuccessful.Upon disconnecting the rv lead the physician noted a small amount of debris on the proximal electrode.The leads were tested with the pacing system analyzer (psa) and all measurements were appropriate.The physician elected to explant the device and keep the leads in service.Following the procedure, there was no evidence of noise observed through the new device.
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