Abstract:

Objective To compare 3 methods of venous blood collection,and to investigate the optimal method of venous blood collection. Methods A total of 600 outpatients were enrolled and randomly classified into 3 groups,Group A,B and C. Group A used traditional tourniquet for venous blood collection. For Group B,using traditional tourniquet,when seeing blood back,tourniquet was undone. Group C did not wear a tourniquet,and used infrared vein visual instrument. Results One-time puncture rate in venous blood collection,the incidence of skin congestion and pain index had statistical significance among the 3 groups （P<0.05）. Group C had the highest one-time puncture rate and the lowest incidence of skin congestion and pain index. Hemolysis rates had no statistical significance among the 3 groups （P>0.05）.Conclusions No tourniquet venous blood collection using infrared vein visual instrument can improve the success rate of puncture,improve specimen quality and relieve pain.

Key words: Venous blood collection, Tourniquet, Infrared vein visual instrument