冠状动脉慢性完全闭塞合并钙化病变的介入治疗

目的 总结冠状动脉慢性完全闭塞(CTO)合并钙化病变经皮冠状动脉介入治疗(PCI)的经验和住院期临床疗效.方法 研究对象为1995年6月至2007年2月CTO合并钙化病变接受PCI的患者726例,其中仅经冠状动脉造影检出624例,经血管内超声(IVUS)检出102例.分析比较两种方法 检出CTO合并钙化病变患者的临床、病变特征和PCI结果 .结果 共处理冠状动脉造影检出624例的728支靶血管和732处靶病变.病例成功率80.6%(503/624),病变成功率80.2%(587/732),失败的121例中87例因导丝通过失败,21例球囊失败,8例发生并发症,5例术后TIMI血流2级,住院期主要不良心脏事件(包括死亡、急性心肌梗死、再次血管重建)发生率1.1%(7/624).共处理IVUS检出102例的120支靶血管和127处靶病变,病例和病变成功率分别为89.2%(91/102)和88.2%(112/127),均高于经冠状动脉造影检出的患者(P<0.05),失败的11例中7例因导丝通过失败,2例球囊通过失败,发生并发症和术后TIMI血流2级各1例,住院期主要不良心脏事件发生率1.0%(1/102).结论 CTO合并钙化病变的PCI可通过正确采用介入治疗器械和技术而获得较高的成功率和较理想的近期疗效,IVUS检测有助于提高PCI开通率.

Acute angiographic and clinical outcomes of patients with calcified chronic total occlusion underwent ercutaneous coronary intervention

Objective To evaluate the in-hospital outcome of patients with calcified chronic total occlusion (CTO) lesion underwent percutaneous coronary intervention (PCI) . Methods The clinic and lesion characteristics as well as acute PCI outcome were analyzed in 726 patients with calcified CTO [624 detected by coronary angiography (CAG) and 102 detected by intravascular unltrasound (IVUS)] and received PCI therapy from June 1995 to February 2007 in our department. Results There were 728 diseased vessels with 732 lesions in these patients. Total procedure success rate (80. 6% vs. 89. 2%, P <0. 05) and the lesion success rate (80. 2% vs. 88.2%, P < 0. 05 ) were significantly lower in calcified CTO detected by CAG compared to that detected by IVUS. The causes of procedure failures in CAG detected patients were as follows: 87 guide failure, 21 balloon failure, 8 procedure related complications and 5 low TIMI blood flow (grade 2) at the end of PCI procedure. The causes of procedure failures in IVUS detected patients were as follows: 7 guide wire failure, 2 balloon failure, 1 procedure related complications and 1 patient with low TIMI blood flow (grade 2). The in-hospital major adverse cardiac events (MACE) rate was 1.1% in CAG detected calcified CTO and 1.0% in IVUS detected calcified CTO (P 0. 05). Conclusion PCI therapy resulted in satisfactory procedure success rate and in-hospital outcome for patients with calcified CTO and IVUS is helpful for further increasing the PCI procedure success rate in patients with calcified CTO.