Tiny fentanyl doses may reveal hidden pain risk

NCT ID NCT00454259

First seen May 19, 2026 · Last updated Jun 13, 2026 · Updated 3 times

Summary

This study tested whether very low doses of fentanyl, an opioid painkiller, can change how healthy volunteers feel pain. The goal was to see if this response could help predict who might develop severe pain after surgery. 48 men aged 18-40 took part, some with a history of past surgery. The results may lead to a simple test to identify people at risk for post-operative pain.

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Contacts and locations

Locations

  • CHU de Bordeaux Département d'Anesthésie-Réanimation II

    Pessac, Hôpital Cardiologique, 33604, France

Conditions

Explore the condition pages connected to this study.