Objective To compare three different ways of radial arterycannulation in patients undergoing routine surgical operation in order to seek clinical optimal cannulation technique.
目的通过比较三种不同穿刺方法的置管成功率，探讨当前临床上最优的动脉穿刺置管方法。
2
Objective: to study the diameters and vessel wall thickness of the dorsalis pedis artery and provide anatomic data for cannulationof the dorsalis pedis artery (CDPA).
目的：研究国人足背动脉的直径和管壁厚度，为足背动脉置管提供解剖学依据。
3
Objective To create a new method of pulmonary arterycannulation during operation for right ventricular assistance, for which minimally invasive decannulation can be done after operation.