论文部分内容阅读
目的评价运动-静息99mTc-MIBI心肌灌注显像对PCI的指导价值。方法选择52例冠心病患者,PCI术前分别行运动和静息99mTc-MIBI心肌灌注显像,PCI术后1~2周再次复查运动和静息99mTc-MIBI心肌灌注显像,对两次显像结果进行对比分析。结果与术前比较,PCI术后运动时间延长(6.13±0.27vs4.29±0.26,P<0.01),耗氧当量增加(7.19±0.27vs5.19±0.27,P<0.01),心率和收缩压乘积(RPP)增加(200.17±5.17vs172.81±6.59,P<0.01),心肌灌注显像缺损计分(运动显像)减少(9.57±0.83vs15.83±0.85,P<0.01);A、B型病变心肌灌注显像改善指数(0.49±0.04)明显高于C型(0.35±0.04,P<0.01)。将术后运动和术前运动心肌灌注显像缺损计分之差与术前运动灌注缺损计分的比值作为疗效,术前静息和术前运动心肌灌注缺损计分之差与术前运动灌注缺损计分的比值与疗效进行直线相关分析,相关系数r=0.63(P<0.01)。结论PCI术后运动心肌灌注显像明显改善;PCI术前运动与静息显像之间的匹配程度可以预测PCI疗效;与C型病变相比,A、B型病变PCI术后心肌灌注显像提示灌注改善较明显。
Objective To evaluate the value of exercise-resting 99mTc-MIBI myocardial perfusion imaging in PCI. Methods Fifty-two patients with coronary heart disease (CHD) were enrolled. Before PCI, 99mTc-MIBI myocardial perfusion imaging was performed respectively. The myocardial perfusion imaging of 99mTc-MIBI was performed again at 1 to 2 weeks after PCI. Like the results of comparative analysis. Results Compared with those before PCI, exercise time was prolonged (6.13 ± 0.27 vs 4.29 ± 0.26, P <0.01), oxygen consumption equivalent (7.19 ± 0.27 vs 5.19 ± 0.27, P <0.01), and heart rate and systolic pressure (P <0.01). The score of myocardial perfusion defect decreased (9.57 ± 0.83vs15.83 ± 0.85, P <0.01) in the group of A (P <0.01) The improvement index of myocardial perfusion imaging in type B lesion (0.49 ± 0.04) was significantly higher than that in type C (0.35 ± 0.04, P <0.01). The postoperative exercise and preoperative myocardial perfusion imaging defect score and the preoperative exercise perfusion defect scoring ratio as a curative effect, preoperative rest and preoperative myocardial perfusion defect score difference with preoperative exercise perfusion The correlation coefficient between defect scoring ratio and curative effect was 0.63 (P <0.01). Conclusions Myocardial perfusion imaging improves significantly after PCI. The matching degree between preoperative PCI and resting imaging can predict the effect of PCI. Compared with C type, myocardial perfusion imaging of type A and type B lesions after PCI Prompted perfusion to improve more clearly.