The NMDA receptor in opioid-induced hyperalgesia: From neuroplasticity to perioperative prevention- Narrative review
Importance. Opioid-induced hyperalgesia (OIH) is a paradoxical increase in nociceptive sensitivity attributable to opioid exposure. In the perioperative period, recognition is difficult because pain from surgical injury, inadequate analgesia, pharmacological tolerance, and acute withdrawal produce overlapping phenotype...