冠心病患者血管重建后吸烟状态对临床预后的影响

目的 探讨冠心病患者血管重建后吸烟状态对其长期临床预后的影响.方法 将893例冠心病患者根据血管重建术前及术后的吸烟状态分为3组:不吸烟组(n=458)、戒烟组(n=287)及吸烟组(n=148),详细记录随访时主要不良心脑血管事件(MACCE)的发生情况.Kaplan-Meier生存分析描述术后累计生存率,并比较吸烟状态对全因性死亡及MACCE的影响,Cox多元逐步回归分析全因性死亡及MACCE的影响因素.结果 平均随访时间约为27个月,术后吸烟率较术前吸烟率明显降低(16.57％ vs.48.71％),且吸烟组患者较年轻(P＜0.0l);不吸烟组患者多为女性(P＜0.01),体质量指数(BMI)较小(P＜0.01).吸烟组全因性死亡(1.53％ vs.1.05％ vs.6.76％,P=0.002)和MACCE(4.37％ vs.5.23％ vs.15.54％,P=0.001)的发生率较高,Cox多元逐步回归分析显示,术后持续吸烟是导致全因性死亡HR=2.753,95％CI(1.695～4.473),P＜0.01]和MACCEHR=1.552,95％CI(1.049～1.754),P=0.001]发生的重要危险因素.结论 冠心病患者血管重建后持续吸烟是导致术后发生全因性死亡和MACCE的独立危险因素.

Effect of smoking on clinical prognosis after vascular reconstruction in patients with coronary heart disease

Objective To investigate the effect of smoking status after vascular construction on the long term prognosis in the patients with coronary heart disease(CHD).Methods Totally 893 patients with CHD were divided into 3 groups according to the smoking status before and after vascular construction,non-smoking group(n=458),quiting smoking group(n=287) and smoking group(n=148).The occurrence situation of major adverse cardiovascular and cerebrovascular events(MACCE) during follow-up period were recorded in detail.The postoperative cumulative survival rate was described by using Kaplan-Meier survival analysis.The effect of smoking status on the all-cause death and MACCE was compared.The Cox stepwise regression analysis was used to analyze the all-cause death and the influence factors of MACCE.Results The average follow up time was about 27 months,the postoperative smoking rate was significantly lower than the preoperative multivariable smoking rate(16.57 ％ vs.48.71％),the patients in the smoking group were younger (P＜0.01);the patients in the non-smoking group were mainly female (P＜0.01),the body mass index (BMI) was smaller(P＜0.01).The all-cause death in the smoking group was higher (1.53％ vs.1.05％ vs.6.76％,P=0.002) and the occurrence rate of MACCE was higher (4.37％ vs.5.23％ vs.15.54％,P=0.001).The Cox multivariable stepwise regression analysis showed that postoperative persistent smoking was an important risk factor leading to the all-cause deathHR=2.753,95％CI(1.695-4.473),P＜0.01] and MACCEHR=1.552,95％CI(1.049-1.754),P=0.001].Conclusion Persistent smoking is an independent risk factor leading to all-cause death and MACCE occurrence in CHD patients after vascular construction.