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  • Title: Ketamine-propofol combination (ketofol) versus propofol alone for emergency department procedural sedation and analgesia: a randomized double-blind trial.
    Author: Andolfatto G, Abu-Laban RB, Zed PJ, Staniforth SM, Stackhouse S, Moadebi S, Willman E.
    Journal: Ann Emerg Med; 2012 Jun; 59(6):504-12.e1-2. PubMed ID: 22401952.
    Abstract:
    STUDY OBJECTIVE: We determine whether a 1:1 mixture of ketamine and propofol (ketofol) for emergency department (ED) procedural sedation results in a 13% or more absolute reduction in adverse respiratory events compared with propofol alone. METHODS: Participants were randomized to receive either ketofol or propofol in a double-blind fashion. Inclusion criteria were aged 14 years or older and American Society of Anesthesiology class 1 to 3 status. The primary outcome was the number and proportion of patients experiencing an adverse respiratory event as defined by the Quebec Criteria. Secondary outcomes were sedation consistency, efficacy, and time; induction time; and adverse events. RESULTS: A total of 284 patients were enrolled, 142 per group. Forty-three (30%) patients experienced an adverse respiratory event in the ketofol group compared with 46 (32%) in the propofol group (difference 2%; 95% confidence interval -9% to 13%; P=.80). Three ketofol patients and 1 propofol patient received bag-valve-mask ventilation. Sixty-five (46%) patients receiving ketofol and 93 (65%) patients receiving propofol required repeated medication dosing or progressed to a Ramsay Sedation Score of 4 or less during their procedure (difference 19%; 95% confidence interval 8% to 31%; P=.001). Six patients receiving ketofol were treated for recovery agitation. Other secondary outcomes were similar between the groups. Patients and staff were highly satisfied with both agents. CONCLUSION: Ketofol for ED procedural sedation does not result in a reduced incidence of adverse respiratory events compared with propofol alone. Induction time, efficacy, and sedation time were similar; however, sedation depth appeared to be more consistent with ketofol.
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