title: The effects of 2% lignocaine gel on incidence of retching with the use of the laryngeal mask airway.
abstract: This randomised, single-blind study investigated the incidence of retching during emergence from general anaesthesia with a laryngeal mask airway in place. Eighty four patients, ASA grade 1 and 2, aged 15 to 60 years, were randomly divided into two groups. Each patient received fentanyl 1 microgram.kg-1 and propofol 2 mg.kg-1 for induction. A laryngeal mask airway was then inserted and the patient breathed spontaneously on a nitrous oxide-oxygen mixture with isoflurane. Lubafax gel was the lubricant in the control group and 2% lignocaine gel was used in the test group. The patients were allowed to wake up at the end of surgery with the laryngeal mask airway in place while a blinded observer observed for retching. The age, sex, weight and duration of surgery were similar in both groups. The test group had a significantly lower incidence of retching on emergence from general anaesthesia with the laryngeal mask airway in place (p < 0.005, Chi-squared test).
authors.affiliation: Department of Anaesthesia, Toa Payoh Hospital, Singapore.
authors.forename: S T
authors.initials: ST
authors.lastname: Chan
authors.forename: C S
authors.initials: CS
authors.lastname: Tham
mesh_terms: D000293:Adolescent; D000328:Adult; D000768:Anesthesia, General; D005260:Female; D006801:Humans; D017214:Laryngeal Masks / Q000009:adverse effects*; D008012:Lidocaine; D008153:Lubrication; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000517:prevention & control; D016037:Single-Blind Method; D013997:Time Factors; D014839:Vomiting / Q000209:etiology* / Q000517:prevention & control
chemical_list: D008012:Lidocaine