The impact of housestaff fatigue on occupational and patient safety.

Extended-duration work shifts (i.e., greater than 24 hours) for housestaff are a long-standing tradition. However, the resultant sleep deprivation and fatigue caused by these extreme work schedules pose potential threats to both physician and patient safety. We believe it is critical to understand the potential adverse consequences of housestaff fatigue to optimize shift schedules and reduce risks to both staff and patients.