摘要
为探讨扩张型心肌病心功能不全患者的Q-T离散度的改变规律,观察27例心功能Ⅰ、Ⅱ级和42例Ⅲ、Ⅳ级患者的Q-T_d、Q-T_(cd).结果显示:心功能Ⅰ、Ⅱ级组与心功能Ⅲ、Ⅳ级组比较,Q-T_d(73±32ms对78±28ms)、Q-T_(cd)(86±39ms对96±35ms)差异均无显著意义(P>0.05);生存组与猝死组比较,Q-T_d(74±29ms对118±17ms)、Q-T_(cd)(91±34ms对143±20ms)差异均有非常显著意义(P<0.01);生存组与心功能不全加重死亡组比较Q-T_d(74±29ms对66±20ms)、Q-T_(cd)(91±36ms对76±19ms)差异均无显著意义(P>0.05)、提示Q-T离散度不反映扩张型心肌病心功能程度,但可作为慢性心功能不全患者猝死的一个重要预测指标.
In order to investigate change vule of Q - T dispersion in patients with cardiac dysfunction secondary to dilated cardiomyopathy,Q-d and Q - Tcd were measured on 12 - lead ECGs in 27 DCM patients of NYHA class ⅠandⅡand 42 DCM cases of classⅢand Ⅳ. Results showed that there were no significant difference in Q - Td and Q-Tcd between two groups (73 ?32ms vs. 78 ?28ms, P> 0.05, 86 ?39ms vs. 96 ?35 ms, P > 0.05). As compared to survivors, Q -Td and Q-Tcd of patients with cardiac dysfunction, who suffered from sudden death, increased significantly(74 ?29ms vs. 118 ?17ms, P <0.01, 91 ?4ms vs. 143 ?0ms, P<0.01) .In contrast, there were no significant difference between survivors and patients who died with deteriorating cardiac dysfunction(74 ?29ms vs.66?20ms, P > 0.05, 91 ?36ms vs.76?9ms, P > 0.05) . It suggested that Q - T dispersion is not mirror of heart function but an important index predicting sudden death in patients with cardiac dysfunction secondary to DCM.
出处
《心电学杂志》
1999年第3期143-144,共2页
Journal of Electrocardiology(China)
