During follow-up, intermittent loss of capture was observed.Abbott technical support reviewed the session records and device printouts and found ectopic beats which were suspected to be interfering with pacing.In addition, high ventricular rate episodes were recorded.The patient experienced ventricular tachycardia so the device was upgraded to an icd.During the procedure, the left ventricular (lv) lead remained implanted and connected to the icd.However, the right ventricular lead was cut, capped and replaced during the procedure.The patient was stable with no adverse consequences.Related manufacturer reference number: 2017865-2020-07701, 2017865-2020-07702.
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The device was returned for analysis and visual inspection on device header did not find any anomalies that could contribute to the reported events.The device image analysis indicated average monthly voltage and current trends were normal.Output, sensitivity, and crosstalk tests were performed and no anomalies were noted.A longevity assessment was performed and device was in the normal range of operation with appropriate remaining longevity.The reported events of failure to capture, pacing problem, and oversensing were not confirmed.
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