Group comparisons were made for the variation of K +, Na +, Cl -, pH, HCO 3 -, SBE and PaCO 2 before and after the treatment, and for the attendance of pulmonary encephalopathy.

• 对比三组治疗前后 K+ 、Na+ 、Cl- 、p H值、HCO3- 、SBE、Pa CO2 等指标的变化及肺性脑病的发生情况。