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目的 :探讨心肌梗死 (MI)患者梗死部位存活心肌对心绞痛发作的影响。方法 :6 3例Q波MI患者分别行静息、硝酸甘油 (NTG)介入99mTc MIBI心肌灌注显像 ,评价梗死部位的存活心肌。结果 :① 6 3例MI患者的 5 6 7个心肌节段中 ,静息心肌显像共有 2 39个节段 (4 2 .15 % )灌注异常 ,含服NTG 1.0mg后介入心肌显像 2 39个节段中有 97个节段得到改善 ,占总异常的 4 0 .5 8% ;②不稳定型心绞痛者存活心肌检出率为 5 9.80 % ,稳定型心绞痛者为 2 9.2 9% ,两者比较差异有显著性意义 (P <0 .0 1)。结论 :①硝酸酯类药物介入显像可以提高严重灌注缺损区存活心肌的检出率 ;②MI后 ,有心绞痛发作 ,提示有较多的存活心肌
Objective: To investigate the effect of myocardial infarction (MI) on myocardial infarction (MI) in patients with myocardial infarction (MI). Methods: Sixty-three Q-wave MI patients underwent myocardial perfusion imaging with 99mTc MIBI with nitroglycerin (NTG), respectively. The surviving myocardial infarction was evaluated. RESULTS: In 563 myocardial segments of 63 patients with MI, there were 2 39 segments (42.25%) of perfusion myocardial perfusion imaging, with myocardial infarction Of the 39 segments, 97 segments were improved, accounting for 40.58% of the total abnormalities. ② The detection rate of viable myocardium in unstable angina was 59.80%, that of stable angina was 2 9.29% There was significant difference between the two (P <0.01). Conclusion: (1) The interventional imaging of nitrates can improve the detection rate of viable myocardium in severe perfusion defect area. (2) There is angina pectoris after MI, suggesting that there are more surviving myocardium