A female patient was to undergo a pars plana vitrectomy, membrane peel, partial air fluid exchange, sub-tenon's kenalog 20 mg for left eye, epiretinal membrane, and cystoid macular edema in the left eye.When the nurse was setting up the machine, the vacuum error message came on the machine, and the machine would not accept the cassette.The nurse checked the vacuum at the wall and it was working correctly.The nurse tried to setup the machine several times more without success.The machine was swapped out with another machine, and the procedure was completed without further incident.Patient to recovery room in satisfactory condition.
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