Effects of obstructive sleep apnea hypopnea syndrome on postoperative complications in patients who undergo off-pump coronary artery bypass grafting.

PURPOSE: To investigate the prevalence of obstructive sleep apnea hypopnea syndrome (OSAHS) in patients undergoing off-pump coronary artery bypass grafting (OPCABG) and analyze the effects of OSAHS on the incidence of post-OPCABG complications, length of stay in intensive care unit (ICU) and hospitalization, and hospital expense. MATERIALS AND METHODS: This prospective study included patients undergoing OPCABG at Beijing An Zhen hospital from January 2018 to December 2018. OSAHS was diagnosed by using a portable sleep monitor before surgery. RESULTS: Among 74 patients, the prevalence of OSAHS and moderate to severe OSAHS (apnea hypopnea index (AHI) ≥ 15) was 70% and 53%, respectively. Compared with the no to mild OSAHS group (AHI < 15), the moderate to severe OSAHS group presented a lower ejection fraction (P = 0.013). Between these two groups, the incidence of post-OPCABG complications; the duration of intubation, ICU stay, and hospitalization; and the hospital expense did not differ. Notably, the ejection fraction was significantly negatively correlated with the duration of ICU stay and hospital expense. CONCLUSIONS: Patients undergoing OPCABG with severe OSAHS are likely to exhibit a low ejection fraction and poor heart function, which may require a longer ICU stay and incur higher hospital expenses.