6Neumann M J,Meyer C T,Dutton J L.et al. Hold that x-ray: aspirate pH and auscultation prove enteral tube placement [ J ], J Clin Gastroenterol, 1995,20 (4) :293-295.
7Metheny N A. Inadvertent intracranlal nasogastric tube placement [ J ]. Am J Nuts, 2002.102 ( 8 ) : 25-27.
8Burns S M,Carpenter R.Truwit J D. Report on the development of a procedure to prevent placement of feeding tubes into the lungs using end-tidal CO2 measurements [ J ]. Crit Care Med .2001,29 (5) :936-939.
9Metheny N A,Smith L,Stewart B J. Development of a reliable and valid bedside test lot bilirubin and its utility for improving prediction of feeding tube location [ J ], Nuts Res, 2000.49 (6) :302-309.
10Ellen M L. What is knov, n about methods of correctly placing gastric tubes in aduhs and ehihlren [ J ]. Gastroenterol Nuts. 2004,27 ( 6 ) : 253-259.
