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观察２８例急性心肌梗塞（ＡＭＩ）患者和３０例稳定性劳力型心绞痛患者室壁运动异常（ＲＷＭＡ）的范围和程度与ＱＴ离散度（ＱＴｄ）变化的关系。结果：①ＡＭＩ组早期即存在明显的ＲＷＭＡ，其ＲＷＭＡ的程度记分明显高于劳力型心绞痛患者。ＡＭＩ后１周、４周的ＱＴｄ值较对照组显著延长。②ＱＴｄ值随ＲＷＭＡ程度加重而逐渐延长，前侧壁ＡＭＩ的ＲＷＭＡ范围比下后壁ＡＭＩ显著为大，相应ＱＴｄ亦显著延长。ＡＭＩ后１周、４周ＱＴｄ值与ＲＷＭＡ的范围和程度记分乘积呈显著正相关（ｒ＝０．７８，ｒ＝０．７１，Ｐ均＜０．０１）。③溶栓再通组发病后１周、４周的ＱＴｄ值较非溶栓组明显减少，前者ＲＷＭＡ程度记分及范围亦较后者显著减少。结论：ＡＭＩ后ＱＴｄ显著延长，并与ＲＷＭＡ程度加重及范围扩大呈密切相关。
To investigate the relationship between extent and extent of wall motion abnormalities (RWMA) and QT dispersion in 28 patients with acute myocardial infarction (AMI) and 30 patients with stable angina pectoris. Results: ①Among the early stage of AMI, significant RWMA was observed, and the RWMA score was significantly higher than that of patients with labor-type angina. QTd values of 1 week and 4 weeks after AMI were significantly longer than those of control group. ② The QTd value gradually increased with the increase of RWMA degree. The RWMA range of anterior wall AMI was significantly larger than the AMI of the inferior posterior wall, and the corresponding QTd was also significantly prolonged. There was a significant positive correlation between the QTd value of 4 weeks and the scoring product of RWMA range at 1 week and 4 weeks after AMI (r = 0.78, r = 0.71, P <0.01). ③ Thrombolytic recanalization group 1 week after onset, 4 weeks QTd value was significantly reduced compared with non-thrombolytic group, the former score of RWMA extent and scope than the latter significantly reduced. Conclusion: The QTd after AMI is significantly prolonged, which is closely related to the increase of RWMA and the widening of the scope of RWMA.