• C H Tan, M K Onisong, and W K Y Chiu.
• Department of Anaesthesia, Pamela Youde Nethersole Eastern Hospital, 3 Lok Man Road, Chai Wan, Hong Kong SAR. chinhow@netvigator.com
• Anaesthesia. 2002 Mar 1;57(3):223-6.

AbstractWe conducted a double blind, prospective, controlled trial comparing intubating conditions after induction with a propofol-ephedrine combination or propofol alone, followed by rocuronium. One hundred adult patients were randomly assigned to receive either propofol 2.5 mg x kg(-1) and ephedrine 15 mg in combination or propofol 2.5 mg x kg(-1) given over 30 s, followed by rocuronium 0.6 mg x kg(-1) given over 5 s. Tracheal intubation was performed 1 min later. Jaw relaxation, vocal cord position and diaphragmatic response were used to assess intubation conditions. Tracheal intubation was successful and acceptable in all patients. There was a significantly higher proportion of intubating conditions graded as 'excellent' in the propofol-ephedrine group (84%) than in the propofol group (32%) (p < 0.0001). Vocal cord position and response to intubation were significantly better in the propofol-ephedrine group, although jaw relaxation was similar. Mean arterial pressure was maintained at pre-induction levels in the propofol-ephedrine group. In conclusion, induction with propofol and ephedrine in combination provided significantly better intubating conditions than propofol alone, when followed by rocuronium.

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