Methods:A randomized controlled trial the next day,the control group with traditional needle method,and the experimental group with a double puncture method were statistically analyzed.
英
美
- 方法:采用随机分组隔日对照实验,对照组实行传统穿刺方法,实验组实行双人合作完成一次穿刺的方法进行统计学分析。