Objective:To investigate the relationship between obstructive sleep apnea(OSA)and the prognosis of patients with chronic congestive heart failure.Methods:A total of 143 patients with chronic congestive heart failure were enrolled in this study and divided into the OSA group(66 cases)and the non-OSA group(77 cases)based on whether they had OSA.The patients were followed up for 3 years.The primary endpoint was major adverse cardiovascular events(MACE),and the secondary endpoints were all-cause mortality,cardiovascular mortality,and heart failure rehospitalization.Kaplan-Meier curves,Cox proportional hazards models,restricted cubic spline(RCS)curves,and subgroup analyses were used to evaluate the relationship between OSA and prognosis.Results:The incidence of MACE was 30.3%in the OSA group and 15.6%in the non-OSA group;meanwhile,the incidence of heart failure rehospitalization was 28.8%in the OSA group and 14.3%in the non-OSA group.Multivariate Cox regression analysis showed that OSA was an independent risk factor for both MACE(HR=2.64,95%CI:1.11-6.31,P=0.028)and heart failure rehospitalization(HR=2.58,95%CI:1.01-6.61,P=0.048).Kaplan-Meier curves showed that the incidence of MACE and heart failure rehospitalization was significantly higher in the OSA group than that in the non-OSA group(Log-rank P<0.05).Additionally,the RCS curve indicated a positive correlation between apnea-hypopnea index(AHI)and MACE risk(nonlinear P=0.257).Subgroup analysis found no significant interaction(P>0.05).Conclusions:OSA is an independent risk factor for MACE and heart failure rehospitalization in patients with chronic congestive heart failure,and AHI is positively correlated with MACE risk.
关键词
阻塞性睡眠呼吸暂停/慢性充血性心力衰竭/主要不良心血管事件/睡眠呼吸暂停低通气指数
Key words
Obstructive sleep apnea/Chronic congestive heart failure/Major adverse cardiovascular events/Apnea-hypopnea index