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%).

结发生故障的主要原因有:穿刺口血(38.4%)、导阻塞(26.0%)、导移位(13.7%)、导脱落(9.6%)、(8.2%)局部感染(4.1%)。