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以24小时动态心电图和二维超声心动图对41例扩张型心肌病患者进行观察,多元回归分析显示:左室舒张末内径与后壁厚度之比(D/T)和室性心律失常程度显著相关。按D/T将患者分为过度扩张型、混合型和肥厚扩张型3组,过度扩张型室性心动过速发生率(91.76%)显著高于混合型(37.5%)和肥厚扩张型(16.7%)。过度扩张型住院病死率50%,显著高于混合型(18.75%);肥厚扩张型无住院死亡。因此,D/T对判断扩张型心肌病易发室性心律失常者具有重要意义。
41 patients with dilated cardiomyopathy were observed by 24-hour Holter and two-dimensional echocardiography. Multiple regression analysis showed that the ratio of left ventricular end-diastolic diameter to posterior wall thickness (D / T) and ventricular arrhythmia were significantly correlated . According to D / T, the patients were divided into three groups: over-dilatation, mixed-type and hypertrophic dilatation. The incidence of over-dilated ventricular tachycardia (91.76%) was significantly higher than that of mixed (37.5%) and hypertrophic dilatation %). Over-dilated in-hospital mortality was 50%, significantly higher than mixed (18.75%); hypertrophic dilatation without hospitalization death. Therefore, D / T to determine the dilated cardiomyopathy prone ventricular arrhythmias are of great significance.