摘要
Author： Jun-bo GE doi： 10.1631/jzus. B1201009 J. Zhejiang Univ.-Sci. B （Biomed. ＆ Biotechnol.）, 2012 Vo1.13 No.8 P.589-602Abstract： This paper describes the current status of percutaneous coronary intervention （PCI） for totally oc- cluded coronary arteries. Chronic total occlusion is associated with 10% 20% of all PCI procedures. Results show that opening an occluded vessel, especially one supplying a considerable area of myocardium, may be beneficial for a patient＇s angina relief and heart function. We describe the devices used currently in re-canalization such as new wires, microcatheters （including Tonus and Cosair） and intravascular ultrasound guidance. Different techniques to improve the success rate and reduce complications are discussed in detail.
