During testing in the laboratory, the device was found to have premature battery depletion.Interrogation of the device revealed the device was at the elective replacement indicator (eri) when received.A longevity calculation was performed and the battery depletion was premature based on the device usage.The device image indicated normal current drain during the implant period and no high current drain sources were found throughout bench and environmental stress testing.Telemetry, impedance, sensing, pacing, and high voltage (hv) output functions of the device were tested and found to be normal.The battery analysis by the manufacturer found the battery was normal.The cause of premature battery depletion could not be determined.
|