Conclusion PTCA was safe and effective in treating occlusivecoronaryarterydisease, especially when the occlusive time was short.
结论闭塞性冠状动脉病变的PT CA是安全有效的，闭塞时间越短ptca成功率越高。
2
Background and Objective: Development of coronary collateral circulation is an important adaptive mechanism occurring in patients with occlusivecoronaryarterydisease.