It seems that some medical professionals think they're super-human. A statistic I've seen cited was that the same number of mistakes were made during the first

It seems that some medical professionals think they're super-human. A statistic I've seen cited was that the same number of mistakes were made during the first eight hours of a shift as during the one hour following those first eight. Basically, the rules apply to medicine like everywhere else: productivity (or whatever you'd want to call it in this case), drops off sharply after eight hours.