心电图运动试验指标联合对介入术后再狭窄诊断的研究

RESEARCH ON DIAGNOSIS OF RESTENOSIS AFTER PCI WITH MULTI-INDEX IN EXERCISE TEST

[目的]通过探讨心电图运动试验测定多项指标联合常规ST段标准诊断冠心病介入术后再狭窄的敏感性和特异性。[方法]对2001年11月～2003年12月,对成功行冠脉介入治疗(PCI)的129例患者,在术后3～6个月进行随访,测量心电图运动试验QTd、ST/HR指数及常规ST段阳性标准三者联合诊断再狭窄,通过冠状动脉造影确定有无再狭窄,评价其诊断再狭窄的价值。[结果]三者联合应用诊断再狭窄的敏感性和特异性分别为90.5%、80.2%,高于传统ST段标准(53.3%,66.7%)(P﹤0.05)。[结论]QTd联合应用ST/HR指数及常规ST断标准可作为诊断再狭窄的无创手段。

[Objectivet] To evaluate the sensitivity and specificity of QT dispersion （QTd） and ST/HB Index at the end of ECG exercise test plus ST segment depression on diagnosing restenosis after PCI. [Methods] 129 patients who had undergone PCI successfully for 3-6 months were involved. Treadmill exercise test and QTd and ST/HR Index were measured at the end of exercise test to diagnosis restenosis which was confirmed by coronary angiography, then the dignosis results of QTD, ST/ HR-Index plus ST segment depression were evaluated. [ Results ] The sensitivity and specificity of QTd and ST/HR Index plus ST segment depression were 90.5% and 80.2% respectively. Both of them were significantly higher than traditional ST-segment depression standard （53.3% and 66.7%）, P〈 0.05. [Conelusions] Measuring QTd and ST/HR Index at the end of ECG exercise .test plus ST segment depression can bemused as a hurtless way for diagnosing restenosis after PCI.