"the O.R. cut–off time for elective dental surgery at UCLA was 4 p.m.
Translated, that meant the patient had to be out of the room and in the recovery room by that time.
That was so everyone could go home by 5 p.m.
So part of my job was to inform them at 3 p.m. that they needed to finish up so I could wake the patient up and get her/him to recovery by 4 p.m.
Frequently this would result in abandonment of some crucial part of the procedure or a shortcut to get done in time."