ABSTRACT
Objective To evaluate the influence of preoperative quitting time on coronary artery bypass grafting (CABG) patients with postoperative hypoxemia incidence.Methods 151 patients with coronary bypass surgery and preoperative history of smoking who preparation of CABG in hospital were recruited from September 2011 to September 2013.According to the preoperative smoking cessation time patients were divided into five groups:0 days,1-30 days,31-60 days,61-90 days,more than 90 days.Single factor regression and Logistic analysis were used to analyse the influence of preoperative quitting time on CABG patients with postoperative hypoxemia incidence.Results Age,weight,smoking habit,quitting time,hypertension,diabetes mellitus were risk factors of hypoxemia after coronary artery bypass grafting.Logistic regression analysis showed that age,body weight,smoking habit,smoking time were independent risk factors of hypoxemia after coronary artery bypass grafting.The incidences of hypoxemia of the five groups 0 days,1-30 days,31-60 days,61-90 days and more than 90 days were 55.56％ (15/27),59.26％ (16/27),27.58％ (8/29),22.73％ (5/22),15.63％ (5/32).The incidence of hypoxemia had significant difference (x2=19.212,P ＜ 0.05).Conclusions Age,weight,smoking habit,quitting time were independent risk factors of hypoxemia after CABG.With the quitting time increase,hypoxemia after CABG overall downward trend.Difference quitting time before the operation,the hypoxemia occurred difference rate influence,On the preoperative smoking CABG patients were smoking cessation intervention timely helps to reduce the occurrence of postoperative hypoxemia.