Result Causes of dysfunction of PICC included staxis around stoma(38.4%),catheter blockage(26.0%),catheter displacement(13.7%),catheter defluxion(9.6%),extubation(8.2%) and local infection(4.1%).

• 结果发生故障的主要原因有:穿刺口渗血(38.；4%25)、导管阻塞(26