急性心肌梗死患者QT离散度变化与室壁厚度异常的关系

目的　观察急性心肌梗死(AMI)患者QT间期离散度变化与室壁厚度异常的关系。方法　观察35例AMI患者和31例劳力型心绞痛患者QT离散度与室壁收缩厚度改变百分率的变化。结果　(1)AMI后第1天、第4周的QTd值较对照组明显延长。对照组和AMI组区域性收缩厚度改变百分率之间差异有显著性(t=6.77,P<0.01)。(2)AMI后第1天和第4周QTd值与区域性收缩厚度改变百分率呈显著负相关(r=-0.85,r=-0.72,P值均<0.01)。结论　AMI后QTcd显著延长，并与收缩时室壁厚度改变密切相关。

Relation between QTdispersion and regional wall thickness abnormality of ventricle in patients with acutemyocardial infarction

Objective To explore the relation between increased QT dispersion (QTcd) and regional wall thickness change abnormality in patients with acute myocardial infarction(AMI).Methods The QTcd and the wall thickness change in systole in 35 patients of early AMI and in 31 cases of exertional angina(control group) were measured.Results 1.The QTcd in AMI group was longer than those in control group.There had significant difference of regional wall thickness change percent in systole between AMI group and the control group(P<0.01). 2. The QTcd of AMI group had significantly negative correlation with the region wall thickness change percent in systole(P<0.01).Conclusion The results showed that the QTcd in early AMI is longer than in exertional angina and the QTcd change is closely correlation with the wall thickness change in systole.