While incidents of unexplained cardiopulmonary arrest after general anesthesia and opioid administration have been reported in association with obstructive sleep apnea (OSA), 80-90 percent of OSA patients are undiagnosed. In 2008, the Joint Commission considered OSA as a proposed National Patient Safety Goal. This session identifies patients at risk for sleep apnea-related complications, explains liabilities related to undiagnosed sleep apnea and shares strategies to reduce complications.