Methods\ 120 preoperational inpatients were chosen randomly to be cleaned intestinally by oral natrium sulfuricum,mannite,magnesium sulfate and conventional soapsudas enema by random sampling.

• 方法对120例住院手术患者随机抽样进行口服硫酸钠(芒硝)、甘露醇、硫酸镁及传统的肥皂水灌肠4种不同方法的肠道清洁。