Educational efficacy of computer software, showing the effect-site concentration of fentanyl, in anesthesia training

INTERVENTION: Anesthesia management is perfomed with a pharmacokinetic simulation program by anesthesia residents who have experience in using it for within 3 months (P(+) group). Anesthesia management is perfomed without a pharmacokinetic simulation program by anesthesia residents who have experience in using it for within three months (P(‐) group). Anesthesia management is perfomed without a pharmacokinetic simulation program by anesthesia residents who have no experience in using it, under supervision of experienced anesthesiologists (C group). CONDITION: oral, otolaryngological, maxillofacial, orthopaedi, dermatological, breast, gastroenterological and gynecological PRIMARY OUTCOME: the fentanyl Ce at the end of surgery, intraoperative total doses of fentanyl and propofol, the time required from the end of operation to extubation, and frequency of analgesics required within 24 hours INCLUSION CRITERIA: American Society of Anethesiologists physical status were 1 or 2.