4Brandt RB, Siegel SA, Waters MG, et al. Spectrophotometric as- say for D-(- )-lactate in plasma [J]. Anal Biochem, 1980,102 ( 1 ) : 39-46.
5O' Boyle C J, MacFie J, Mitchell C J, et al. Microbiology of bacte- rial translocation in humans[J]. Gut, 1998,42:29-35.
6Gomes GF, Pisani J, Macedo ED, et al. The nasogstric feeding tube as a risk factor for aspiration and aspiration pneumonia. Curr Opin Clin Nutr Metabol Care,2003,3 (6) : 327-333.