Tracheal intubating conditions after induction with propofol, remifentanil and lignocaine.
We have studied the intubating conditions in 60 ASA I or II patients, after induction of anaesthesia with propofol 2 mg kg-1, allocated to one of the following three groups: group 1, remifentanil 1 microgram kg-1; group 2, remifentanil 1 microgram kg-1 and lignocaine 1 mg kg-1; group 3, remifentanil 2 micrograms kg-1. No neuromuscular blocking agents were administered. Intubating conditions were assessed using a four-point scoring system based on ease of laryngoscopy, jaw relaxation, position of vocal cords, degree of coughing and limb movement. Overall intubating conditions were acceptable in 35% of patients in group 1, 100% of patients in group 2 and 85% of patients in group 3. There was a statistically significant drop in blood pressure after induction in groups 2 and 3, and two patients in each group required ephedrine 6 mg i.v. boluses, as dictated by the intervention criteria (mean arterial pressure fall > 25% from baseline). Similarly, there was a drop in heart rate in groups 2 and 3, but this did not reach statistical or clinical significance, and no patient required atropine.
Woods
A W
AW
Department of Anaesthesia, Victoria Infirmary, Glasgow, UK.
Grant
S
S
Harten
J
J
Noble
J S
JS
Davidson
J A
JA
D000293:Adolescent; D000328:Adult; D000368:Aged; D000758:Anesthesia; D018686:Anesthetics, Intravenous; D000779:Anesthetics, Local; D004311:Double-Blind Method; D005260:Female; D006439:Hemodynamics / Q000187:drug effects; D006801:Humans; D007442:Intubation, Intratracheal; D008012:Lidocaine; D008297:Male; D008875:Middle Aged; D010880:Piperidines; D015742:Propofol; D000077208:Remifentanil
D018686:Anesthetics, Intravenous; D000779:Anesthetics, Local; D010880:Piperidines; D008012:Lidocaine; D000077208:Remifentanil; D015742:Propofol