目的探讨支气管哮喘患儿心电向量图的变化。方法选择临床上未合并心功能不全的哮喘发作期患儿20例,随机匹配健康儿童20例为对照;用心电自动分析仪描记Frank导联心电向量图,测量F面、H面、LS面QRS环、T环最大向量振幅及方位、QRST夹角、ST向量振幅及方位。微机数理统计。结果哮喘组QRS环时间延长(P<0.01),QRS环、T环最大向量振幅及ST向量振幅增大,其方位偏向左下、左侧与左后,F面QRST夹角增大,多数指标与对照组比较差异无显著性(P>0.05)。结论心电向量图能客观反映支气管哮喘患儿血流动力学变化,哮喘患儿心脏有潜在受损,应引起临床重视 Objective  To investigate the changes of ECG in children with bronchial asthma. Methods 20Twenty children with asthma attack who were not clinically complicated with cardiac insufficiency were selected and matched randomly with 20 healthy children as controls. The electrocardiogram (ECG) LS surface QRS ring, T-ring maximum vector amplitude and azimuth, QRST angle, ST vector amplitude and azimuth. Computer mathematical statistics. Results  Asthma group QRS ring prolonged (P <0.01), QRS ring, T-ring maximum vector amplitude and ST vector amplitude increased, the direction of the left lower left, left and left, the FST QRST angle increases, the majority There was no significant difference between the index and the control group (P> 0.05).  Conclusion  ECG vector chart can objectively reflect hemodynamic changes in children with bronchial asthma, asthma in children with heart potential damage should cause clinical attention