| Model Number |
N160 |
| Medical Device Problem Code |
High impedance (1291)
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| Health Effect - Clinical Code |
No Clinical Signs, Symptoms or Conditions (4582)
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| Date of Event |
09/13/2023
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Type of Reportable Event
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Malfunction
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Additional Manufacturer Narrative
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If pertinent information is provided in the future, a supplemental report will be submitted.
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Event or Problem Description
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It was reported that this cardiac resynchronization therapy defibrillator (crt-d) and right ventricular (rv) defibrillation lead exhibited high out-of-range shock impedance measurements greater than 125 ohms for the last year and a half.Technical services (ts) reviewed troubleshooting options and possible causes, including possible lead calcification.This crt-d system remains in service, and will continue to be monitored at this time.No adverse patient effects were reported.
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Additional Manufacturer Narrative
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This product has not been returned to boston scientific, and as a result, laboratory analysis could not be conducted.The associated investigation determined that there was no conclusive evidence that the observed out-of-range impedance measurements were due to a product performance issue or an inadequate lead-to-device connection.However, intermittent, out-of-range shock lead impedance measurements with no conclusive evidence of a performance issue or an inadequate lead-to-device connection are likely the result of the low-energy test signal utilized for daily automatic or in-clinic commanded shock lead impedance testing.A software update was released in 2015 to further improve consistency of the impedance test results and provide the clinician with additional diagnostic tools, including programmable shock lead impedance alert limits.
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Event or Problem Description
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It was reported that this cardiac resynchronization therapy defibrillator (crt-d) and right ventricular (rv) defibrillation lead exhibited high out-of-range shock impedance measurements greater than 125 ohms for the last year and a half.Technical services (ts) reviewed troubleshooting options and possible causes, including possible lead calcification.This crt-d system remains in service, and will continue to be monitored at this time.No adverse patient effects were reported.
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Search Alerts/Recalls
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