This study will help the study team determine how the experimental, non-opioid pain control regimen affects opioid-related side effects, participant satisfaction with pain management, PACU length of stay, hospital length of stay, chronic pain level, and chronic pain-related disability in participants, and to determine the safety and tolerability of the non-opioid pain control regimen in head and neck cancer patients undergoing cancer surgery with free flap reconstruction. Ketamine, Lidocaine, Acetaminophen, Gabapentin, and Celecoxib are FDA-approved drugs that have been approved for use individually, and have been used in combination for perioperative pain control. However, the use of these five drugs together in head and neck cancer patients undergoing free flap reconstruction has not been studied, which is why this study is experimental.
