经外周静脉置人中心静脉导管（peripherally inserted central catheter，PICC）是由外周静脉穿刺置管，其导管尖端位于上腔静脉。因操作方......

研究背景"God has given you one face, and you make yourselves another"------"上帝给了你们一张脸,你们却还要自己另造一张”(......