Prevalence of Obstructive Sleep Apnea in Patients Undergoing Coronary Artery Bypass Graft Surgery (CABG). A Pilot Study

Prevalence of Obstructive Sleep Apnea in Patients Undergoing Coronary Artery Bypass Graft Surgery (CABG). A Pilot Study

Abstract Background: Impact of Obstructive Sleep Apnea during postoperative period is not fully understood. This study aims to determine the impact of Obstructive Sleep Apnea (OSA) on postoperative complications in patients undergoing coronary artery bypass graft (CABG). Methods: A total of 128 consecutive patients undergoing CABG were evaluated prospectively. Patients were screened for OSA using the by Berlin questionnaire. Post-operative course of patients was followed including length of stay until discharge and 30 days thereafter to record any readmission during that period of time. Results: From the cohort evaluated, 81 patients (67%) were found to have OSA. Complication rate between OSA and non OSA group was not significantly different between OSA and non-OSA (6.9% vs. 5.9%, p=NS). Subset analysis for gender, race and age did not reveal any differences. Patients in the OSA group had higher percentage of acute respiratory failure/Re-intubation rate (7.5%) versus (0.8%) in non-OSA group but the difference was not statistically significant. Patient in OSA group spent more time in intensive care unit (ICU) and hospital but differences were not significant. Conclusion: The study is suggestive of high prevalence of OSA in patients undergoing CABG but no significant increase in postoperative complications in patients with OSA undergoing CABG is noted.