乳幼児点滴時のカテーテル周辺の血栓形成とその因子群の流動場への影響について

抄録

This paper describes the relation between relative position of peripheral intravenous catheter in vein and thrombus generation around it. In this study, it is assumed that the contact of catheter on the vein wall causes thrombus formation due to change of flow filed. First of all, the thrombus formation in the vein model, which is made of silicone tube, were observed by CCD camera. It was found that there are some cases of catheter’s contacts to the tube wall when the thrombus occurs. To investigate the flow field of the flow, CFD analysis around the catheter in the infantile vein was done. The results show that there are low shear rate regions, low velocity regions, and long retention time region near the area of catheter’s contact. It was concluded that the relative position of catheter in the vein may cause the thrombus formation due to infant’s motion during drip.