The customer contacted physio-control to report that during a recent patient event their device powered off multiple times while attempting to defibrillate.The patient, a (b)(6) old male, had just come out of cardiac bypass surgery and was in the process of being moved to icu when he went into cardiac arrest.The customer powered the device on using dc (battery) power only and made two attempts to defibrillate the patient.Both times that the customer attempted to defibrillate, when they pressed the shock button and the device powered off by itself.The customer then obtained a backup device (also a lifepak 20) and plugged in the same qc therapy cable and qc defibrillation electrodes and were able to provide a 300 joule defibrillation shock to the patient.Multiple additional shocks were provided using the backup device.There was approximately 8 minutes between their first attempt to defibrillate the patient and when they provided the successful shock.The customer also advised that cpr was performed on the patient throughout the event and that acls protocol medications were delivered.The patient did not survive the event.
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