title: Conditions for laryngeal mask insertion. A comparison of propofol versus sevoflurane with or without alfentanil.
abstract: One hundred unpremedicated ASA 1 or 2 patients scheduled for elective surgery were divided equally into four groups and recruited into this prospective, randomised parallel groups study. Induction was with propofol 2.5 mg.kg-1 or vital-capacity breath induction with sevoflurane (> 7% in the inspiratory gas) in 65% nitrous oxide and oxygen, or gaseous induction with sevoflurane plus alfentanil 5 micrograms.kg-1 or propofol 2.5 mg.kg-1 and alfentanil 5 micrograms.kg-1. The conditions for laryngeal mask insertion were assessed and graded on a three-point scale using six variables. The overall condition for laryngeal mask insertion was assessed as excellent, satisfactory or poor on the basis of total score in each group. Excellent or satisfactory conditions were observed in 25 (100%) patients in the sevoflurane-alfentanil group, 22 (88%) in the propofol-alfentanil group and 16 (64%) patients each in the propofol and sevoflurane groups (p < 0.001). A sevoflurane-alfentanil combination provides better conditions for laryngeal mask insertion when compared with sevoflurane alone, or a propofol-alfentanil combination.
authors.affiliation: Department of Anaesthesia, National University Hospital, Singapore.
authors.forename: P
authors.initials: P
authors.lastname: Sivalingam
authors.forename: R
authors.initials: R
authors.lastname: Kandasamy
authors.forename: G
authors.initials: G
authors.lastname: Madhavan
authors.forename: P
authors.initials: P
authors.lastname: Dhakshinamoorthi
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D015760:Alfentanil; D019162:Anesthetics, Combined; D018685:Anesthetics, Inhalation; D018686:Anesthetics, Intravenous; D005260:Female; D006439:Hemodynamics / Q000187:drug effects; D006801:Humans; D017214:Laryngeal Masks / Q000009:adverse effects; D008297:Male; D008738:Methyl Ethers; D008875:Middle Aged; D015742:Propofol; D011446:Prospective Studies; D000077149:Sevoflurane
chemical_list: D019162:Anesthetics, Combined; D018685:Anesthetics, Inhalation; D018686:Anesthetics, Intravenous; D008738:Methyl Ethers; D015760:Alfentanil; D000077149:Sevoflurane; D015742:Propofol