title: Before cannulation of the radial artery.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001132:Arm / Q000098:blood supply*; D001158:Arteries; D001794:Blood Pressure; D002404:Catheterization / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged