口服硫酸镁首次饮水量对肠道准备的影响

Effect of first oral magnesium sulphate volume on intestinal preparation

目的探索口服硫酸镁后首次饮水量对肠道准备效果和患者满意度的影响。方法按数字表法将研究对象随机分为3组,每组138例。组1为对照组,组2、组3为干预组。组1按传统方法服用硫酸镁,即口服50%硫酸镁溶液70ml后立即服用清水300ml,要求5min内饮完。待首次排便后再分次饮用余下清水。饮水总量共计约1 500ml。指导患者于每次喝水后进行快走运动,疲劳时可卧床进行腹部按摩;组2、组3为干预组,采用改良方法服用硫酸镁。首次饮水量分别改为500ml及800ml。饮水时间、总饮水量及饮水后运动指导均同对照组。结果组3肠道清洁度优于组1、组2,且不良反应较少,差异有统计学意义(P<0.05)。结论口服硫酸镁后首次饮水800ml既可缩短肠道准备时间又可减少不良反应发生。

Objective To study the effect of first oral magnesium sulphate volume on intestinal preparation and satisfaction of patients. Methods Four hundred and fourteen patients were randomly divided into control group（group 1）, convention groups 2 and 3（138 in each group）. Patients in control group were given 70ml 50% magnesium sulfate immediately after taking 300ml water in 5 minutes. The patients were then given the remaining 1 200ml water after the first defecation and took a fast walk each time after drinking water. They could massage their abdomen on bed when they felt tired. Patients in convention groups 2 and 3 received 500ml and 800ml water, respectively. The drinking time and volume of water and walking after drinking water were similar to those in control group. Results The intestinal cleanliness was better and the adverse reactions were tess in convention group 3 than in convention group 2 and control group（P〈0.05）. Conclusion Drinking 800ml water after taking 70ml magnesium sulfate can shorten the intestinal preparation time and reduce the adverse reactions.