On(b)(6) 2016, (b)(6) reported to a ge healthcare (gehc) field engineer (fe) that the gehc system shut down in the middle of a transcatheter aortic valve replacement (tavr) while deploying valve.Customer rebooted successfully.During reboot, patient experienced a cardiac arrest but recovered well.Procedure was completed successfully.Investigation of this event used information from gehc fe and system logs.The system is not under gehc service contract.The system does not have a fluoro uninterruptible power supply (ups) but has a system ups of 190 kva maintained by the customer to back up system in case of main power failure.Gehc engineering log analysis confirmed abrupt shutdown of the system as if emergency power off (epo) was activated.The contract company providing system maintenance confirmed that the pdb (power distribution box) had to be turned on after the abrupt shutdown before the system could be turned on from the console.The system booted in 4 min after turning on the pdb button in control room.Gehc fe verified all the pdb main connections and the power distribution unit (pdu) ups to be normal.Gehc fe also verified the continuity and impedance of the epo and no issue was observed.Site history shows this is the first time abrupt shutdown was reported after installation in 2006.Based on the available information, the probable root cause is accidental epo activation.The customer is aware of the potential for accidental remote epo activation.Based on this analysis, no further action is required.
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