title: Ultrasound-guided radial artery catheterization and the modified Allen's test.
abstract: In this case report, ultrasound-guided radial artery catheterization and a modified Allen's test were performed by Emergency Department (ED) physicians to facilitate the management of an intubated, critically injured patient. Ultrasound was demonstrated to be a valuable tool in determining collateral circulation and guiding radial artery cannulation in a patient unable to cooperate with the traditional Allen's test. Ultrasound guidance may reduce the risk of radial artery catheterization in severely injured patients.
authors.affiliation: Department of Emergency Medicine, University of California Davis Medical Center, Davis, California, USA.
authors.forename: Sharon R
authors.initials: SR
authors.lastname: Wilson
authors.forename: Itamar
authors.initials: I
authors.lastname: Grunstein
authors.forename: Elsa R
authors.initials: ER
authors.lastname: Hirvela
authors.forename: Daniel D
authors.initials: DD
authors.lastname: Price
mesh_terms: D000293:Adolescent; D002406:Catheterization, Peripheral / Q000379:methods*; D004636:Emergency Service, Hospital; D006225:Hand / Q000098:blood supply; D006801:Humans; D008297:Male; D017534:Radial Artery / Q000000981:diagnostic imaging*; D018084:Ultrasonography, Interventional