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观察40例AMI患者的PTFv_1动态变化。AMI早期PTFv_1异常发生率高、负值大。PTFv_1异常主要与心功能不全有关,AMI伴明显心功能不全者其PTFv_1多小于-0.04mm·s。以PTFv_1≤-0.04mm·s预测左心房扩大有较高的特异性和准确性。
The dynamic changes of PTFv 1 in 40 AMI patients were observed. AMI early PTFv_1 high incidence of abnormal, negative. PTFv_1 anomalies are mainly associated with cardiac insufficiency, AMI with obvious cardiac dysfunction, its PTFv_1 less than -0.04mm · s. To PTFv_1≤-0.04mm · s prediction of left atrial enlargement with higher specificity and accuracy.