Conclusions The respiration crock up patient s using PN+EN will be propitious to avoirdupois resuming,immunity advancing an d respiration function improving.

• 血流动力学无明显变化。 结论对呼吸衰竭患者行肠外+肠内营养有利于患者恢复体重,提高免疫力,呼吸功能恢复快。