1Schweickert WD, Herlitz J, Pohlman AS, et al. A randomized, con- trolled trial evaluating postinsertion neck ultrasound in peripherally inserted central catheter procedures [J]. Crit Care Med, 2009, 37 (4) :1217-1221.
2Trerotola SO, Thompson S, Chittams J, et al. Analysis of tip malpo- sition and correction in peripherally inserted central catheters placed at bedside by a dedicated nursing team [ J ]. J Vasc Interv Radiol, 2007,18(4) :513-518.