Opioid study reveals how painkillers affect mood before surgery

NCT ID NCT05639712

First seen Nov 01, 2025 · Last updated May 16, 2026 · Updated 26 times

Summary

This study looked at how three common opioids (morphine, oxycodone, and fentanyl) affect feelings like anxiety, relaxation, and pain right before surgery. It also tracked how much opioid pain medicine patients used after surgery and what factors predicted long-term use or persistent pain. Over 1,000 adults having day surgery in Norway took part. The goal was to better understand opioid effects and improve pain management.

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Contacts and locations

Locations

  • Harald Lenz

    Oslo, Norway

Conditions

Explore the condition pages connected to this study.