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  • Title: The effects of alfentanil or remifentanil pretreatment on propofol injection pain.
    Author: Iyilikci L, Balkan BK, Gökel E, Günerli A, Ellidokuz H.
    Journal: J Clin Anesth; 2004 Nov; 16(7):499-502. PubMed ID: 15590252.
    Abstract:
    STUDY OBJECTIVE: To compare the efficacy of alfentanil, remifentanil, and saline in minimizing the propofol injection pain. DESIGN: Randomized, double-blind study. SETTING: University hospital. PATIENTS: 175 ASA physical status I and II, adult female patients undergoing minor gynecological procedures with general anesthesia. INTERVENTIONS: Unpremedicated patients were randomly allocated to one of four groups. Patients received 2 mL (1 mg) of alfentanil (n=43), 2 mL of remifentanil 0.01 mg (n = 43), 2 mL of remifentanil 0.02 mg (n=45), or 2 mL of saline (n=44) 30 seconds prior to administration 5 mL of propofol 1%. MEASUREMENTS: Patients were asked whether they had pain due to propofol injection. Their pain scores were evaluated with a Visual Analogue Scale. In the Postanesthesia Care Unit, frequency of postoperative nausea, vomiting, hypotension, and flushing were all determined. MAIN RESULT: The remifentanil and alfentanil groups showed significantly less frequency and severity of pain than the saline group (p <0.05). When the alfentanil group was compared with the remifentanil groups, significant differences in pain relief associated with injection of propofol (p <0.001) were noted. Remifentanil 0.02 mg relieved pain associated with injection of propofol more effectively than remifentanil 0.01 mg (p <0.001). CONCLUSIONS: The remifentanil and alfentanil groups showed significantly less frequency and severity of pain than did the saline group. Remifentanil was effective in preventing propofol injection pain, and should be used at a dose of at least 0.02 mg for this purpose. Remifentanil may be an alternative drug for prevention of propofol injection pain.
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