中文摘要：

目的：探讨改良盲法穿刺技术在经外周静脉置入中心静脉导管（PICC）置管中的效果和可行性。方法：将我科需要PICC置管的70例病人随机分为经B超引导穿刺组和改良盲法穿刺组，每组各35例。记录两组病人一次穿刺成功率、一次置管成功率、穿刺点位置、上臂臂围、置管时间、静脉炎发生率、皮下淤血率等资料。结果：改良盲法穿刺组在一次穿刺成功率、一次置管成功率、穿刺点位置、静脉炎发生率、皮下淤血率与经B超引导穿刺组差异无统计学意义（P〉0．05）。改良盲法穿刺组置管时间明显短于经B超引导穿刺组（P〈0．001）。上臂臂围与改良盲法穿刺组一次成功率呈负相关（-0．475，P=0．004）。结论：改良盲法穿刺技术在PICC置管成功率较高，且不增加并发症和置管时间。

英文摘要：

Objective： To investigate the application and feasibility of the night-vision puncture technique in performing peripherally inserted central catheter（PICC）. Methods： Seventy patients were randomly divided into ultrasound guided puncture group or modified blind puncture group, 35 cases in each group. The puncture success rate, the achievement ratio of catheterization, the puncture site, arm circumference, catheterization time and complications were recorded in two groups. groups had no significant difference in the puncture success rate, the achievement ratio of the puncture site, arm circumference, phlebitis incidence, subcutaneous congestion （bl Results ： Two catheterization, ceding 0.05 ）. The catheterization time in modified blind puncture group was shorter than the ultrasoun ） （P〉 d guided puncture group （P 〈 0. 001 ）. In modified blind puncture group, a negative correlation （correlation coef- ficient： -0. 475 ,P = 0. 004 ）between arm circumference and the puncture success rate was found. Conclusion ： The puncture success rate of the modified blind puncture technique in performing peripher- ally inserted central catheter （PICC） is high and close to the puncture success rate of the PICC under ultrasound. Additionally, the modified blind puncture technique does not increase the incidence of compli- cations and delay the catheter time.