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Updated: Dec 18, 2025

Use of the Operant Orofacial Pain Assessment Device OPAD to Measure Changes in Nociceptive Behavior
Published on: June 10, 2013
Pamela A Chia1, Maxime Cannesson, Christine C Myo Bui
1Department of Anesthesiology and Perioperative Medicine, University of California, Los Angeles, Los Angeles, California, USA.
Opioid-free anesthesia (OFA) is a feasible opioid-sparing technique using multimodal analgesia and regional anesthesia. While effective, OFA requires careful management of drug interactions, provider training, and patient expectations for optimal perioperative pain control.
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