The successful block rate and complications for double needle pucture group were respectively higher and lower than those of single needle puncture group ( P< 0.01 ).
双针组的阻滞成功率显著高于单针组，而并发症显著低于单针组（P＜0．01）。
The successful block rate and complications for double needle pucture group were respectively higher and lower than those of single needle puncture group ( P< 0.01 ).
双针组的阻滞成功率显著高于单针组，而并发症显著低于单针组（P＜0．01）。
应用推荐