右心室舒张末期内径对慢性心力衰竭患者预后的影响

目的 探讨右心室舒张末期内径(RVDD)对慢性心力衰竭(CHF)患者预后的影响.方法 回顾性分析我院2005年1月1日至2010年5月31日因CHF住院患者的临床资料,对所有入选患者电话随访.根据患者预后分为存活组和死亡组,通过组间单因素比较及多因素Logistic回归分析等方法评价各因素与CHF患者死亡的相关性.结果 共1552例患者纳入本次研究,平均年龄(64.62±10.45)岁,男性879例(56.64％),平均随访3年,存活组和死亡组分别为1113例(71.71％)和439例(28.29％).2组组间基线资料比较发现性别、年龄、收缩压(SBP)、心功能分级、肌酐、左心室射血分数(LVEF)、左心室舒张末期内径(LVDD)及RVDD差异有统计学意义,此8项指标经多因素Logistic回归分析结果显示RVDD(OR=1.11,95％ CI 1.07～1.14,P＜0.01)、年龄(OR=1.03,95％CI1.02 ～ 1.05,P＜0.01)、肌酐(OR=1.03,95％CI 1.01 ～1.06,P＜0.01)、LVEF(OR=0.93,95％cI0.92～0.97,P＜0.01)、LVDD(OR=1.13,95％CI 1.09 ～I.17,P＜0.01)以及心功能分级(OR=1.17,95％CI 1.12 ～1.24,P＜0.01)与CHF患者死亡相关.通过ROC曲线检验RVDD的预测效能,计算曲线下面积(ROC)为0.805(95％CI0.798 ～0.812,P＜0.01).结论 RVDD增大将增加CHF患者死亡风险.RVDD可作为CHF患者死亡的独立预测因素.

Effect of right ventricular end-diastolic diameter on prognosis of patients with chronic heart failure

Objective To determine the prognostic value of fight ventricular end-diastollc diameter (RVDD)in patients with chronic heart failure(CHF).Methods The clinical data of the in-hospital patients diagnosed as CHF were analyzed retrospectively.Telephone follow-up was carried out for all participants.The patients were divided into the survival group and death groups according to their clinical outcomes.The relationship between RVDD and death was evaluated by independent t-test and multivariate Logistic regression analysis.Results 1552 in-hospital patients were enrolled into the study.The mean age was 64.62 ± 10.45 years old,with 879(56.64％)male.After 3 years' follow-up,439(28.29％)patients died.Comparison of baseline data showed that gender,age,SBP,NYHA classification,the serum level of creatinine,LVEF,LVDD and RVDD were significantly different between the two groups(P ＜ 0.01);Multivariable logistic analysis showed that RVDD(OR=1.11,95％ CI:1.07-1.14,P ＜0.01),age(OR =1.03,95％ CI:1.02-1.05,P ＜0.01),creatinine(OR =1.02,95 ％ CI:1.01-1.04,P ＜ 0.01),LVEF(OR =0.93,95 ％ CI:0.92-0.97,P ＜ 0.01),LVDD(OR =1.13,95％ CI:1.09-1.17,P ＜0.01)and NYHA classification(OR =1.17,95％ CI:1.12-1.24,P ＜ 0.01)were independent predicting factors for the death of CHF patients.The power of RVDD to predict mortality was examined by ROC curves.The area under the curve was 0.805(95％ CI:0.798-0.812,P ＜ 0.01).Conclusion RVDD increases the risk of death in patients with CHF.RVDD is a significant independent predictor for death among patients with CHF.