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目的：寻找扩张型心肌病（DCM）合并充血性心力衰竭（CHF）的独立危险因素，为临床预防和治疗扩心病患者的病情提供依据。方法：选择我院收治的扩张型心肌病患者125 例，按照NYHA 分级分组，将心功能Ⅱ-Ⅳ级同时左心室射血分数（LVEF）＜ 40％的患者91例定义为观察组；将心功能Ⅰ级同时左心室射血分数≥40％的患者34 例定义为对照组。在比较两组临床资料的基础上，采用logistic多因素分析方法确立扩张型心肌病合并心力衰竭的独立危险因素。结果：单因素分析结果发现，观察组中的 “房颤”及“脉压≥70mmHg”这两个参数比对照组的数量明显增多，差异有统计学意义（P<0.05）。logistic 多因素分析发现“脉压≥ 70mmHg”、“房颤”是扩心病合并心力衰竭的独立危险因素。结论：“脉压≥70mmHg”、“房颤”是扩张型心肌病合并充血性心力衰竭的独立危险因素，需要在临床治疗扩心病患者时警惕这两项指标的异常。

英文摘要:

Objective: To find the independent risk of factor of dilated cardiomyopathy (DCM) with ventricular congestive heart failure (CHF). Methods: 125 patients from our hospital were involved in this investigation. Patients were divided by NYHA. 91 patients with NYHA grade Ⅱ - Ⅳ and LVEF<40% were selected as observation group, and the rest 34 patients with NYHA grade Ⅰ with LVEF≥40% were selected as control group. On the base of analyses of clinical data, logistic analyses were used to establish its independent risk factors. Results: Univariate analyses showed that "atrial fibrillation"and "pulse pressure≥70mmHg" in the observation group were increased significantly than that in the control group (P<0.05). Logistic analyses showed that "pulse pressure≥70mmHg" and "atrial fibrillation"were independent factors. Conclusion: "pulse pressure≥70mmHg" and "atrial fibrillation" were independent factors of DCM with CHF. It is necessary to be alert when these two indicators are abnormal in the clinical treatment.

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