Harrison RF, et al. - The prevalence of obstructive sleep apnea was investigated among gynecologic oncology patients undergoing elective surgery. Furthermore, a relationship between obstructive sleep apnea and postoperative outcomes was determined. Women presenting for surgery with a gynecologic oncologist demonstrated a higher prevalence of obstructive sleep apnea or were at higher risk for the condition. As body mass index increased, increase in the prevalence of previously-diagnosed obstructive sleep apnea or screening at risk for the condition was noted. Women with untreated obstructive sleep apnea and those who screened at risk for the condition displayed an increased risk for postoperative hypoxemia and delayed return of bowel function.