摘要
目的 观察急性心肌梗塞患者QT离散度 (QTd)和JT离散度 (JTd)的动态变化 ,并探讨其临床意义。方法 在发病 48h内、第 7天、第 2 1天分别对 5 2例病人行 12导联心电图检查 ,必要时加做右胸及V7～ 9导联 ,按QTd =QTmax-QTmin,JTd =JTmax-JTmin计算。结果 与 48h内相比较 ,第 7、2 1天QTd和JTd值明显降低 ,差异有极显著性 ;第7、2 1天QTd和JTd值相比较 ,差异无显著性。QT离散度和JT离散度在心律失常组与无心律失常组间差异有显著性 ,猝死组QTd和JTd增高更显著。结论 急性心肌梗塞早期患者QTd和JTd增加 。
Objective To investigate the changes of QT interval dispersion (QTd) and JT dispersion (JTd) in patients with acute myocardial infarction (AMI) and their clinical significance. Methods QTd、JTd were measured from the 12 lead ECG in 52 patients after onset of AMI. The right percordial lead and V7～9 lead were recorded when necessary, QTd and JTd was calculated according to QTd=QT max -QT min ,JTd=JT max -JT min . Results The QTd and JTd were significantly higher within the 48 h after the onset of AMI compared with that of the seventh day. The QTd and JTd in the seventh day compared with that in the twenty first day after the onset of AMI showed no significant difference; patients with ventricular arrhythmia had significantly higher QTd and JTd comparing with those without ventricular arrhythmia. Conclusion QTd and JTd increase significantly in early stage after the onset of AMI and is closely related to the occurrence of ventricular arrhythmia. They can be used as important indexes to evaluate the prognosis of patients with AMI.
出处
《安徽医科大学学报》
CAS
2000年第6期464-465,共2页
Acta Universitatis Medicinalis Anhui
