英语语法分析

Objective To relieve the pain of venepuncture in the dorsum of the hand.

目的探讨手背静脉穿刺时疼痛程度最低的最佳部位，减轻患者的痛苦。

Their behavior during venepuncture and it's success rate in the two groups were closely observed.

观察两组患儿静脉穿刺时的行为状况和静脉穿刺的成功率。

As a routine operation in nursing, removing the venepuncture needle leads to many adverse effects.

静脉穿刺拔针是护理常规操作，然而拔针不当会出现许多不良反应。