Gould D S, Gould D B
Jefferson Medical College, Philadelphia, Pennsylvania, USA.
Acta Anaesthesiol Scand. 1996 Feb;40(2):272-4. doi: 10.1111/j.1399-6576.1996.tb04431.x.
Differently designed right atrial venous air embolism retrieval catheters were tested in vitro in clinical simulations to determine if increasing numbers of aspirating orifices enhance the recovery of air bubbles by aspirating through these catheters. Air bubbles of 1.5 to 2.0 mm diameter were directly observed to pass against the aspirating orifices while catheters were vertically suspended in a 3.7 cm diameter glass cylinder filled with hetastarch. Essentially, no air, only fluid, was recovered by any of these submerged catheters upon aspiration. Only when an orifice was positioned above a fluid level could air be retrieved.
在临床模拟中，对设计不同的右心房静脉空气栓塞回收导管进行了体外测试，以确定增加抽吸孔数量是否能通过这些导管抽吸来提高气泡的回收率。当导管垂直悬挂在一个装有贺斯（羟乙基淀粉）的直径3.7厘米的玻璃圆筒中时，直接观察到直径为1.5至2.0毫米的气泡逆着抽吸孔通过。基本上，这些浸没在液体中的导管在抽吸时都没有回收空气，只有液体。只有当一个孔位于液面上方时才能回收空气。
