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目的探讨扩张型心肌病(DCM)出现心力衰竭时所发生的心律失常及其与心力衰竭程度的关系。方法选择临床已确诊为DCM心力衰竭患者93例,分别实施6min步行试验,并根据试验结果按心力衰竭程度不同将其分为A、B、C三组,随后进行动态心电图(DCG)检查。结果上述每组病例DCG至少检出2类心律失常,以室性心律失常最多见,其次是房性心律失常和传导阻滞。A、B、C三组心力衰竭的恶性室性心律失常发生率排序依次为C组>B组>A组,经方差分析,C组、B组与A组之间有显著差异,而C组与B组之间无显著差异(F=3.67,P<0.05)。结论 DCM心力衰竭患者心律失常发生率高,且类型多样,多为复合型,其严重程度与心力衰竭程度密切有关。
Objective To investigate the relationship between cardiac arrhythmia and heart failure in patients with dilated cardiomyopathy (DCM). Methods Ninety-three patients with clinically diagnosed DCM heart failure were enrolled in this study. Six-minute walking tests were performed. According to the results, the patients were divided into three groups according to the degree of heart failure: group A, group B, and group C, followed by dynamic electrocardiogram (DCG) examination. Results In each of the above cases, at least 2 types of arrhythmia were detected in DCG, the most common was ventricular arrhythmia, followed by atrial arrhythmia and conduction block. The incidence of malignant ventricular arrhythmias in groups A, B and C was ranked as follows: group C> group B> group A. There was significant difference between group C and group B and group A by analysis of variance, while group C There was no significant difference between group B and group B (F = 3.67, P <0.05). Conclusion The incidence of arrhythmia in patients with DCM heart failure is high, and the types are diverse and mostly complex, the severity of which is closely related to the degree of heart failure.