目的探讨血管内超声（IVUS）对冠状动脉真性分叉病变介入治疗的指导作用及对远期预后的影响。方法选取2010年4月至2014年1月接受双支架治疗的冠状动脉分叉病变患者62例，随机分为IVUS组（32例）和冠状动脉造影组（30例），比较两组冠状动脉主支和分支近端和远端最小管腔直径（MLD）、最小管腔横截面积（MLA）、参照管腔直径（RLD）及病变长度、植入支架直径和长度，并记录术后12个月支架内血栓、靶病变血运重建（TLR）、主要不良心血管事件（MACE）。结果 IVUS组主支和分支MLD 高于冠状动脉造影组（P＞0.05），MLA、RLD、植入支架直径和长度均高于冠状动脉造影组（P＜0.05），IVUS组支架内血栓、TLR、MACE发生率均低于冠状动脉造影组（P＞0.05）。结论 IVUS指导经皮冠脉介入治疗（PCI）双支架植入治疗冠状动脉分叉病变，有助于优化支架植入，改善PCI远期预后。%Objective To investigate the application of intravascular ultrasonography in guiding the performance of interventional management for coronary true bifurcation lesions. Methods A total of 62 patients with coronary true bifurcation lesions, who were admitted to authors’ hospital during the period from April 2010 to Jan. 2014 to receive double stenting treatment, were included in this study. The patients were randomly divided into intravascular ultrasonography group (IVUS group, n=32) and coronary angiography group(CA group, n=30). The minimal lumen diameter(MLD), the minimal lumen area(MLA), the reference lumen diameter (RLD), the length of the lesion and the diameter and length of the implanted stent were determined, and the results were compared between the two groups. During the follow-up period lasting for 12 months after percutaneous coronary intervention, the incidence of in - stent thrombus, target lesion revascularization (TLR) and major adverse cardiac events were recorded. Results The MLD values of the main artery and branches in IVUS group were higher than those in CA group, but the difference was not significant (P>0.05). The MLA, RLD, the diameter and length of the implanted stent in IVUS group were significantly larger than those in CA group (P<0.05). The incidence of in-stent thrombus, TLR and major adverse cardiac events in IVUS group were lower than those in CA group (P>0.05). Conclusion Intravascular ultrasound- guided double stent implantation for coronary true bifurcation lesions can help optimize the performance of stenting and improve the long-term outcome of percutaneous coronary intervention.
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