We try to through the use of virtual reality technology in combination with lidocaine in different injection time to reduce the pain of PICC catheter school-age children. Using the convenience sampling method, the selection in May 2020, 2021 - may need to PICC placement of children as the research object, is divided into three groups A, B, c, group A in ultrasound guided by PICC placement; Group B and group C adopt VR intervention, and 5 min before the beginning of the next surgery using VR equipment. Group B was anesthetized after the needle was placed into the guide wire, and group C was anesthetized before the needle was placed into the guide wire.
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Success rate of one puncture
Timeframe: Immediately after the end of the catheterization