Effects of cardiopulmonary bypass on pulmonary function in COPD patients undergoing beating heart coronary artery bypass surgery

Background: The aim of this study was to compare the effects of cardiopulmonary bypass (CPB) on the postoperative course of patients with chronic obstructive pulmonary disease (COPD) following coronary artery bypass graft (CABG) surgery.Methods: This retrospective study included 375 COPD patients who underwent isolated CABG surgery with either on-pump (group 1) or off-pump beating heart techniques (group 2) between April 2014 and August 2018.Results: Group 1 included 42 (11.2%) and group 2 included 333 (88.8%) patients. The mean mechanical ventilatory support times of groups 1 and 2 were 10.6 ± 36.2 and 5.1 ± 2.61 hours, respectively (p = 0.561). The mortality rates of groups 1 and 2 were 4.76% (two patients) and 1.50% (five patients), respectively (p = 0.142).Conclusion: The on-pump beating heart CABG surgery did not affect the postoperative mechanical ventilatory support times in patients with COPD.