It was reported that the patient presented to the emergency room after the implantable cardioverter defibrillator (icd) began beeping.Upon interrogation, it was found that the icd was in backup vvi mode.It was noted that magnetic resonance imaging (mri) was performed without properly programming the device into mri mode prior.The device was restored successfully.Once the device was restored, the physician attempted to perform the capacitor load test.The device again reverted to backup vvi mode.This was attempted multiple times without success.The device was explanted and replaced.The patient was in stable condition.
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The reported field event of reset was confirmed.Final analysis found the reset was caused by the device being exposed to magnetic resonance imaging (mri) without being programmed for mri use.Interrogation of the device revealed the device was above elective replacement indicator (eri) upon receipt.Telemetry, impedance, sensing, pacing and high voltage (hv) output functions of the device were tested and found to be normal.
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