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Comparison of the analgesic effect of patient-controlled oxycodone and fentanyl for pain management in patients undergoing colorectal surgery

초록/요약

Oxycodone is a μ-opioid receptor agonist and is generally indicated for the relief of moderate to severe pain. The aim of this study was to compare the analgesic efficacy of patient-controlled oxycodone and fentanyl for postoperative pain in patients undergoing colorectal surgery. Patients scheduled to undergo elective colorectal surgery (n=82) were allocated to receive oxycodone (n=41, concentration of 1 mg/mL) or fentanyl (n=41, concentration of 15 μg/mL) for postoperative pain management. After the operation, pain using a numerical rating scale (NRS), delivery to demand ratio, infused dose of patient-controlled analgesia (PCA), side effects, and sedation levels were evaluated. Median (25%–75%) cumulative PCA dose of oxycodone group at 48 hours (66.9, 58.4–83.7 mL) was significantly less than that of fentanyl group (80.0, 63.4–103.3 mL, P=.037). Six hours after surgery, the mean (SD) NRS scores of the oxycodone and fentanyl groups were 6.2 (2.4) and 6.8 (1.9), respectively (P=.216). The mean equianalgesic potency ratio of oxycodone to fentanyl was 55:1. The groups did not differ in postoperative nausea, vomiting, and level of sedation. Patient-controlled oxycodone provides similar effects for pain relief compared to patient-controlled fentanyl in spite of less cumulative PCA dose. Based on these results, oxycodone can be a useful alternative to fentanyl for PCA in patients after colorectal surgery. © 2016 John Wiley & Sons Australia, Ltd

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