ST段抬高型急性心肌梗死患者猝死预警指标Tp-e/QT比值的应用价值

摘要

Objective To investigate clinical value of Tp-e/QT ratio as warning index for sudden death of acute ST-segment elevation myocardial infarction patients.Methods Research group contained 50 diagnosed patients with acute ST-segment elevation myocardial infarction, and control group contained 50 healthy people. QTd, Tp-e and Tp-e/QT ratio were compared between the two groups.Results There were statistically significant differences of QTd, Tp-e and Tp-e/QT ratio between the research group and the control group (P<0.05). QTd and TP-e of malignant arrhythmia and non-malignant arrhythmia patients in the research group were respectively (58.5±3.9), (158.7±32.6)ms and (58.8±4.2), (162.3±33.4)ms. Their difference had no statistical significance (P>0.05). Their Tp-e/QT were (0.32±0.06) and (0.29±0.05), and the difference had statistical significance (P<0.05).Conclusion This study shows obviously increased Tp-e/QT ratio in acute ST-segment elevation myocardial infarction patients, and this ratio is a good warning index for cardiac sudden death.%目的 探讨ST段抬高型急性心肌梗死(心梗)患者猝死预警指标Tp-e/QT比值的临床价值.方法 诊断为ST段抬高型急性心肌梗死的患者50例为研究组;对照组为同期50例来院进行健康体检的受试者.对比两组QTd、 Tp-e及Tp-e/QT比值.结果 研究组和对照组QTd、 Tp-e及Tp-e/QT对比差异有统计学意义(P<0.05).研究组中恶性心律失常者与非恶性心律失常者QTd、 Tp-e分别为(58.5±3.9)、(158.7±32.6)ms和(58.8±4.2)、(162.3±33.4)ms, 对比差异无统计学意义(P>0.05);研究组中恶性心律失常者与非恶性心律失常者Tp-e/QT分别为(0.32±0.06)、(0.29±0.05), 差异有统计学意义(P<0.05).结论 本次研究认为ST段抬高型急性心肌梗死患者Tp-e/QT比值明显增大, 其是心脏猝死的较好预警指标.