4Gemma O,Matt J.Evaluation of an electrocardiographbased PICC tip verification system[J].BrJ Nurs,2013,22(14):S24-S28.
5Pittiruti M,La Greca A,Scoppettuolo G.The electrocardiographic method for positioning the tip of central venous catheters[J].J Vasc Access,2011,12(4):280-291.
6Mcgee WT,Ackerman BL,Rouben LR, et al. Accurate placement of central venous catheters: 1 prospective randomized, multicen- ter trail[J]. Crit care Med,1993,21:lllS-1123.
7Nancy LM,Glenda LD,Elizabeth A,et al.Electrocardiogram(EKG) Guided Peripherally Inserted Central Catheter Placement and Tip Position: Results of a Trial to Replace Radiological Con- firmation [J ]. 1JAVA,2010,15 (1) :8-14.
8Pittiruti M,Bertollo D,Briglia E,et al. The intracavitary ECG method for positioning the tip of central venous catheters :re- sults of an Italian muhicenter study [J]. J Vasc Access,2012,13 (3) :357-365.
9Schummer W,Schummer C,Schelenz C,et al. Central venous catheters--the inability of 'intra-atrial ECG' to prove adequate positioning[J]. Br J Anaesth,2004,93 : 193-198.
10Kremser J ,Kleemann F,Reinhart K,et al. Optimized method for correct left-sided central venous catheter placement under electrocardiographic guidance[J]. Brit J Anaesth,2011,107(4) : 567-572.
