观察血管内超声(IVUS)在慢性完全闭塞性冠状动脉病变(CTO)介入治疗中的应用效果。

将2015年8月至2017年3月郑州大学第二附属医院收治的72例CTO患者依据随机数表法将其分为对照组(36例)和实验组(36例)。对照组患者接受冠状动脉造影引导下PCI术治疗，实验组接受IVUS引导下PCI术治疗。对比两组患者手术成功率、术中并发症发生率和术后MACE发生率。

实验组手术成功率(94.44%)高于对照组(75.50%)，差异有统计学意义(P<0.05)。实验组患者PCI术中并发症发生率(8.33%)低于对照组(27.78%)，差异有统计学意义(P<0.05)。实验组患者术后MACE发生率(5.56%)低于对照组(22.22%)，差异有统计学意义(P<0.05)。

IVUS在CTO患者介入治疗过程中应用效果较好，可有效提高手术成功率，降低术中并发症和术后MACE发生率，值得临床推广。

To observe the effect of intravascular ultrasound (IVUS) in the interventional treatment of chroinc total occlusion (CTO).

A total of 72 CTO patients admitted to The Second Affiliated Hospital of Zhengzhou University from August of 2015 to March of 2017 were randomly divided into control group and experimental group, 36 patients in each group. The control group received PCI under the guidance of coronary angiography, and the experimental group received ivus-guided PCI. The surgical success rate, the incidence of intraoperative complications and the incidence of postoperative MACE were compared between the two groups.

The operation success rate of the control group (75.50%) was lower than that of the experimental group (94.44%), and the difference was statistically significant (P<0.05). The complication rate of the experimental group (8.33%) was lower than that of the control group (27.78%), and the difference was statistically significant (P<0.05). The incidence of postoperative MACE in the experimental group (5.56%) was lower than that in the control group (22.22%), and the difference was statistically significant (P<0.05).

The IVUS has a good application effect in the interventional treatment of CTO patients, which can effectively improve the success rate of surgery, reduce the incidence of intraoperative complications and postoperative MACE, and has clinical promotion value.