比较改良内镜下空肠营养管置入术与常规内镜下空肠营养管置入术的临床应用效果。

回顾性分析2019年1月至2019年12月首都医科大学附属北京儿童医院消化内科徒手置入空肠营养管失败后行内镜下空肠营养管置入的67例患儿，收集患儿行内镜检查时置管适应症、年龄、置管时间并采集图片记录、放置后行腹部平片了解空肠管放置位置并判断放置效果。

传统方法置管平均时间为20.12 min，成功率为92.9%，改良组26例，置管平均时间为10.42 min，成功率100%，利用Mann-Whitney检验，P<0.005，有明显统计学差异，年龄对两种技术置管时间影响无明显差异(P＝0.875)。

改良空肠营养管技术在不增加患儿费用的情况下，可有效缩短置管时间，提高置管成功率，适用于各年龄段儿童，为急重症患儿早期进行肠内营养提供支持。

To compare the clinical application effect of placing jejunum nutrition tube by the improved method and the ordinary method.

From Jun 2019 to Dec. 2019, there were 67 patients who need jejunum nutrition tube by the improved and the ordinary methods.We recorded the operation time, achievement ratio, and tube displacement ratio and compared the data.

The jejunum nutrition tubes were successfully placed by the ordinary method. The success rate was 92.9% and the mean time cost was 20.12 min.In the improved group, the success rate was 100%, and mean time cost was 10.42 min.There was a statistically significant difference in mean time cost between the ordinary and the improved methods(P<0.005). There was no statistically significant difference in the age and the mean time between these two groups(P=0.875).

The improved jejunal nutrition tube technology can effectively shorten the time of tube placement and increase the success rate of tube placement without increasing the cost of children. It is suitable for children of all ages and provides support for enteral nutrition in children with acute illness.