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目的 探讨STc延长与QT离散度诊断心绞痛的价值。方法 回顾分析 98例冠心病患者的心电图及临床资料 ,并以心脏神经官能症或肋间神经痛患者资料为对照。结果 观察组与对照组STc值分别为 (0 .12 2 8± 0 .0 0 2 2 )s和 (0 .1136± 0 .0 0 18)s,两组比较有显著性差异 ,观察组STc≥ 0 .12s者 89例 ,占90 .81% ;对照组STc≥ 0 .12s者 8例 ,占 5 %。两组STc延长发生率比较有显著性差异 ,且冠心病患者心绞痛发作时STc值与发作前后比较有显著性差异。结论 STc、QT离散度变化与心绞痛发作有内在联系 ,可精确反映心肌复极不同步性和电不稳定性 ,是诊断心绞痛的可靠指标。
Objective To investigate the value of STc prolongation and QT dispersion in the diagnosis of angina pectoris. Methods The ECG and clinical data of 98 patients with coronary heart disease were retrospectively analyzed. The data of patients with cardiac neurosis or intercostal neuralgia were used as controls. Results The STc values of the observation group and the control group were (0.1228 ± 0.0002 ± s) and (± .1136 ± 0 .0018s), respectively. There was significant difference between the two groups. The STc There were 89 cases (≥0.12 s), accounting for 90.81%. The control group had STc≥0.12 s, 8 cases (5%). There was a significant difference in the incidence of STc prolongation between the two groups, and the STc value of angina pectoris patients with coronary heart disease compared with before and after the onset of significant differences. Conclusion The changes of STc and QT dispersion are intrinsically linked with the onset of angina pectoris and can accurately reflect the asynchronous and instability of myocardial repolarization. It is a reliable indicator of angina pectoris.