5Orozco LM, Torres A, Ferrer M, et al.Semirecumbent position protects from pulmonary aspiration but not completely from gastroesophageal reflux in mechanically ventilated patients[J ]. Am J Respir Crit Care Med, 1995, 152(4): 1387 -1390.
7Kirby DF, Delegge MH, Fleming CR.American gastroenterological association technical review on tube feeding for enteral nutrition[J].Gastroenterology,1995,108(4) :3-21.
8Torres A, Serra BJ, Ros E, et al. Pulmonary aspiration of gastric contents in patients receiving mechanical ventilation: The effect of body position [J].Ann Intern Med, 1992,116 : 540 - 543.
