title: Effect of speed of injection of 0.5% plain bupivacaine on the spread of spinal anaesthesia.
abstract: We have studied the influence of two different speeds of injection on the spread of spinal anaesthesia of bupivacaine in 40 orthopaedic patients. In a random order, 0.5% plain bupivacaine 3 ml was administered in 10 or 180 s into the subarachnoid space using a 27-gauge needle with the patients in a lateral horizontal position. The slower speed produced a higher spread of spinal anaesthesia (median difference 2.5 segments, P < 0.05).
authors.affiliation: Department of Anaesthesia, Helsinki University Central Hospital, Finland.
authors.forename: M
authors.initials: M
authors.lastname: Tuominen
authors.forename: M
authors.initials: M
authors.lastname: Pitkänen
authors.forename: P H
authors.initials: PH
authors.lastname: Rosenberg
mesh_terms: D000328:Adult; D000368:Aged; D000775:Anesthesia, Spinal; D002045:Bupivacaine / Q000008:administration & dosage*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D013997:Time Factors
chemical_list: D002045:Bupivacaine