Objective: To study on the effect of normal saline and heparin dilution to prevent phlebothrombosis for patients after PICC tube indwelling.

研究生理盐水与肝素稀释液对经外周置入中心静(PICC)后静栓的预。

Deep phlebothrombosis was found in 6 of the 10 cases who were performed color Doppler ultrasonography on the lower extremity while valve dysfunction was found in one case.

10例行下肢静彩色多普勒超声检查，6例发现深静栓，1例瓣膜功能不全。