多排CT在冠状动脉慢性完全闭塞病变介入治疗中的应用价值

Clinical Value of Multi-slice Computed Tomography Angiography for Percutaneous Coronary Intervention Treatment for Chronic Coronary Artery Total Occlusive Lesion

目的:探讨多排计算机断层扫描造影技术(CTA)在冠状动脉慢性完全闭塞病变(CTO)介入治疗中的应用价值。方法:25例进行过CTA检查的CTO患者。其中,介入治疗前进行CTA检查者11例;其余14例患者介入治疗前未进行CTA检查,在术后3d内完成CTA检查。结果:11例介入治疗前进行CTA检查的患者中,有8例(73%)介入手术成功。14例介入治疗前未进行CTA检查的患者PCI均失败。介入治疗成功者CTO病变局部平均CT密度值是324±58Hu,平均PCI操作时间是73±31min,介入治疗失败者CTO病变局部平均CT密度值是560±131Hu(P<0.01)。平均PCI操作时间是120±41min(P<0.01)。结论:CTO病变局部CT密度值有助于预测介入手术成功率。

Objective： To explore clinical value of multi-slice computed tomography angiography （CTA） in percutaneous coronary intervention （PCI） treatment of chronic coronary artery total occlusion （CTO） lesion. Methods： This study included 25 patients with CTO lesions defined by CTA. Eleven patients performed CTA before PCI. The other 14 patients underwent failed PCI without CTA. These patients were performed CTA three days after PCI. Results： Of 11 patients with CTA before PCI, 8 patients （73 %） undergone successful PCI. Mean CT attenuation value of patients undergone successful PCI was 324 ± 58Hu, mean CT attenuation value of patients undergone failed PCI was 560 ± 131Hu （P〈0. 01）. Mean procedure time of PCI of patients undergone successful PCI was 73 ± 31minutes, mean procedure time of PCI undergone failed PCI was 120 ± 41minutes （P〈0. 01）. Conclusion： CT attenuation value of CTO lesions is helpful to predict the success rate of PCI.