Risk factors of postoperative hypoxemia after shoulder arthroscopic surgery: a single-center retrospective study

Abstract Background Shoulder arthroscopic surgery has become the first choice for the surgical treatment of a variety of shoulder diseases. In previous studies, the incidence of hypoxemia after shoulder arthroscopic surgery was 12.6% and 16%, which is usually accompanied by several unfavourable consequences, including prolonged ventilator support, increased hospital length of stay, increased intensive care unit length of stay, and higher perioperative mortality. The Purpose of this study is to identify independent risk factors of postoperative hypoxemia in the post anesthesia care unit(PACU)after shoulder arthroscopic surgery. Methods This was a single-center retrospective study including 358 patients undergoing shoulder arthroscopic surgery between January 2020 and January 2021 at LuoYang Orthopedic Hospital of Henan Province Orthopedic Hospital of Henan Province. The relative factors of postoperative hypoxemia were tested through descriptive analysis and logistic regression, and the independent risk factors were obtained. Results The incidence of postoperative hypoxemia was 14.0% in our study. Through descriptive analysis and logistic regression, the independent risk factors of postoperative hypoxemia were as follows: age[odd ratio(OR)=1.069, 95% confidence interval (CI) = 1.012–1.129,P = 0.018]、body mass index (BMI) (OR = 1.425,95% CI = 1.250–1.626,P = 0.000、operating time (OR = 1.011,95%CI = 1.000-1.021,P = 0.041) irrigation fluid volume (OR = 1.093,95%CI 1.033–1.156,P = 0.002) . Conclusion Age, BMI, operating time, irrigation fluid volume were 4 independent risk factors for postoperative hypoxemia in the PACU after shoulder arthroscopic surgery.