title: Progression of forearm intravenous regional anesthesia with ropivacaine.
abstract: The progression of sensory blockade in the hand following a forearm Bier block with ropivacaine is currently unknown. The hands of 10 healthy adult human subjects were anesthetized with ropivacaine, and their sensitivities to cold and touch were tested until the completion of anesthesia. On average, insensitivity to cold occurred uniformly throughout the hand within 9 mins; however, touch sensation was not complete until approximately 20 mins after injection. The spread of anesthesia occurred in a semisystematic way, spreading proximally and distally from the site of injection (mid-dorsum of the hand), and, at a slower rate, from the dorsum of the hand to the palm.
authors.affiliation: Department of Anesthesiology, Oregon Health & Science University, Portland, OR 97239, USA. hornj@ohsu.edu
authors.forename: Jean-Louis
authors.initials: JL
authors.lastname: Horn
authors.forename: Paul
authors.initials: P
authors.lastname: Cordo
authors.forename: Daniela
authors.initials: D
authors.lastname: Künster
authors.forename: Christopher
authors.initials: C
authors.lastname: Harvey
authors.forename: Anne
authors.initials: A
authors.lastname: Cherry
authors.forename: Alexander
authors.initials: A
authors.lastname: Bratt
authors.forename: Victor
authors.initials: V
authors.lastname: Gurfinkel
mesh_terms: D000328:Adult; D000577:Amides / Q000008:administration & dosage*; D000765:Anesthesia, Conduction / Q000379:methods*; D000771:Anesthesia, Intravenous / Q000379:methods*; D003080:Cold Temperature; D005260:Female; D005542:Forearm / Q000098:blood supply / Q000294:innervation; D006801:Humans; D008297:Male; D008875:Middle Aged; D009407:Nerve Block / Q000379:methods; D000077212:Ropivacaine; D013997:Time Factors; D014110:Touch / Q000187:drug effects / Q000502:physiology
chemical_list: D000577:Amides; D000077212:Ropivacaine