During stenting of lad, loss of imaging and hemodynamic monitoring on all imaging monitors in cath lab 3.Patient developed asystole and apneic, cpr instituted, code blue.Pt was intubated and moved to cath lab 1.Cath lab 3 was closed for further investigation into imaging going down.The case started with good picture at the beginning, then the signal failed would explain the grainy picture witnessed by the users as the case continued.The cathode side of the cable had a definite indication of arcing located under the system cabinet behind nurse station.A shut down error message did appear on screen however was only on screen for short amount of time before machine shut down.Biomed check with siemens.Per biomed check - siemens engineer found arcing at one of the high-tension cables in the system cabinet.This arcing could be heard when tech was troubleshooting the discrepancy.The condition caused a high resistance short circuit which would cause signal degradation during pulsing associated with the fluoroscopy type of case.High resistance shorts can be intermittent and can also slowly cause signal degradation.A new high-tension cable was installed by siemens engineers.The system was then calibrated.
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