| Model Number |
E053 |
| Medical Device Problem Codes |
High impedance (1291); Noise, Audible (3273)
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| Health Effect - Clinical Code |
No Clinical Signs, Symptoms or Conditions (4582)
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| Date of Event |
03/17/2022
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Type of Reportable Event
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Malfunction
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Event or Problem Description
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It was reported that this implantable cardioverter defibrillator (icd) system exhibited a high out of range shock impedances measuring 125 ohms on the right ventricular (rv) lead.As a result, the device emitted beeping tones.It was noted there was no noise observed on the presenting electrogram.Technical services recommended to have the device checked with a programmer to stop the beeping, raising the upper rate limit to 150 or greater and to perform a commanded 41j shock.At this time, the icd and rv lead remains in service.No adverse patient effects were reported.
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Event or Problem Description
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It was reported that this implantable cardioverter defibrillator (icd) system exhibited a high out of range shock impedances measuring 125 ohms on the right ventricular (rv) lead.As a result, the device emitted beeping tones.It was noted there was no noise observed on the presenting electrogram.Technical services recommended to have the device checked with a programmer to stop the beeping, raising the upper rate limit to 150 or greater and to perform a commanded 41j shock.At this time, the icd and rv lead remains in service.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 malfunction or an inadequate lead-to-device connection.However, intermittent, out-of-range shock lead impedance measurements with no conclusive evidence of a malfunction 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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Search Alerts/Recalls
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