title: Assessment of ulnar collateral circulation by the Allen test in patients undergoing radial artery harvest.
authors.forename: Lokeswara Rao
authors.initials: LR
authors.lastname: Sajja
mesh_terms: D003097:Collateral Circulation; D003935:Diagnostic Techniques, Cardiovascular / Q000592:standards*; D006225:Hand / Q000098:blood supply*; D006801:Humans; D017534:Radial Artery; D012680:Sensitivity and Specificity; D020858:Tissue and Organ Harvesting; D014457:Ulna / Q000098:blood supply; D018608:Ultrasonography, Doppler