Value of intravascular ultrasound in the interventional therapy of left main coronary stenosis
10.3760/cma.j.issn.1008-6315.2011.07.012
- VernacularTitle:血管内超声技术在介入治疗左主干病变中的应用价值
- Author:
Yongqiang FENG
- Publication Type:Journal Article
- Keywords:
Intravascular ultrasound;
Coronary artery disease;
Interventional therapy;
Left main coronary stenosis
- From:
Clinical Medicine of China
2011;27(7):703-705
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the clinical application value of intravascular ultrasound(IVUS) in the treatment of left main coronary stenosis. Methods Sixty-three patients with left main coronary stenosis were identified by IVUS to evaluate the plaque characteristics and the severity of the stenosis. According to the severity of the stenosis,the patients were divided into percutaneous coronary intervention ( PCI) group (IVUS=50% ) (n = 33 ) and control group (IVUS < 50% ) (n = 30). The group of PCI was treated by PCI. The control group was treated by routine therapeutic agents. The profiles of plaques and stenosis were described. The complications were recorded by follow-up visits. Results More soft and eccentric plaques were found in PCI group. After one year follow up,cardiac events (angina) occurred in 4 cases (12. 1% ) in PCI group. In control group, cardiac events ocurred in 18 patients (60. 0%), including 6 cases of angina, 5 case of paroxysmal ventricular tachycardia,3 cases of myocardial infarction (confirmed by IVUS,showing that the left main coronary artery was responsible for the event), 3 cases of frequent premature ventricular contraction and 1 case of sudden death. There was a significant difference in the occurrence rate of cardiac events between PCI group and non-PCI group (x2 = 13. 81 ,P <0.01). Conclusion IVUS is useful for the identification and treatment guidance. Intervention therapy produces good prognosis in patients with IVUS-identified left main coronary stenosis by more than 50% of the area.
