Radial artery puncture

Radial artery puncture is a medical procedure performed to obtain a sample of arterial blood for gas analysis.[1] A needle is inserted into the radial artery and spontaneously fills with blood. The syringe is either prepacked with a small amount of heparin to prevent coagulation, or must be heparinised, by drawing up a small amount of heparin and squirting it out again.[citation needed]

The right radial artery.


  1. ^ Collins, Kevin P.; Russian, Christopher J.; Gonzales, Joshua F. (2016). "Teaching Health Care Students the Radial Arterial Puncture Procedure". Journal of Allied Health. 45 (4): 283–288. ISSN 1945-404X. Retrieved 7 March 2021.