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[Clinical usefulness of remifentanil].

Anesthesia with remifentanil can be induced either with slow bolus administration (1 microg x kg(-1) for over 60 sec) or with starting the continuous infusion (0.5-1 microg x kg(-1) x hr(-1)) combined with a standard hypnotic agent (i.e. propofol, thiamylal, sevoflurane or isoflurane). According to the patient's requirement observing hemodynamics, the infusion rate of remifentanil should be titrated after tracheal intubation. Because of the rapid onset and short duration of its action, the infusion rate can be increased or decreased safely. Remifentanil is an effective agent in obtunding the stress response to tracheal intubation and surgery. Due to its synergistic effect with hypnotic agents, sevoflurane, isoflurane or propofol, it should be reduced carefully to prevent excessive depth of anesthesia. BIS values should be monitored closely. Remifentanil seems to be as potent as fentanyl. Prior to emergence from general anesthesia using remifentanil, postoperative pain management should be considered. NSAIDs or a long acting opioid could be administered.