While the surgical case was in progress, the insufflation device stopped working.Surgeon lost air at a critical point during surgery while bleeding was occuring.Insufflation box showed 1/4 bar of co2 still remaining.Immediate troubleshooting action occurred including checking ports in patient for leak, switching co2 over to spare tank on tower, which did nothing and turning device off and back on.Equipment technician notified to come into room stat with additional co2 tank.He then switched tanks and it was noted that both of the original tanks still had co2 remaining.He also check all connections and turned machine off and back on.Machine still remained broken and showed 1/4 bar of co2 remaining.A few minutes went by and machine suddenly started working again.Dr.Involved with entire processes.No injury to patient.Clinical engineering checked and no problem found.Clinical engineering unable to duplicate event.
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