It was reported that the right atrial (ra) lead exhibited varying and high impedance, rising and high thresholds, far field r-wave (ffrw) oversensing, inappropriate pacing and a polarity switch.It was also reported that the right ventricular (rv) lead exhibited varying and high impedance, high and unstable thresholds, noise, undersensing, oversensing, intermittent capture, non-physiological short ventricular interval counts, inappropriate pacing and a polarity switch.Both the ra and rv leads were noted to be fractured.The ra and rv leads remain in use. no patient complications have been reported as a result of this event.
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Medtronic submits this report to comply with fda regulations 21 cfr parts 4 and 803.Medtronic has made reasonable efforts to provide as much relevant information as is available to the company as of the submission date of this report.This report does not constitute an admission or a conclusion by fda, medtronic, or its employees that the device, medtronic, or its employee caused or contributed to the event described in the report.Any required fields that are unpopulated are blank because the information is currently unknown or unavailable.Medtronic will submit a supplemental report if additional relevant information becomes known.
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