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Study identifier: NCT06750302 Synced from ClinicalTrials.gov · July 28, 2026
● Recruiting

Effectiveness of Penthrox vs Placebo in Sinus Procedures, a Clinical Trial

Condition: Chronic Rhinosinusitis (CRS)  ·  Sponsor: St. Paul's Hospital, Canada

PhasePhase 1/Phase 2
Planned participants100
Who can joinAll sexes, 19 Years to no upper limit
Healthy volunteersNo

About this study

The goal of this randomized controlled trial is to evaluate the effectiveness of inhaled methoxyflurane (Penthrox) as an analgesic for patients undergoing minor rhinology and sinus procedures, specifically comparing it to a placebo control. The primary question the study aims to answer is: Does methoxyflurane provide superior pain relief compared to placebo during minor sinus procedures, as measured by the Visual Analog Scale (VAS)? If there is a comparison group: Researchers will compare the effects of Penthrox to the placebo (saline + one drop of methoxyflurane) to see if it provides better pain relief, reduces anxiety, and leads to fewer complications, including bleeding. Participants will be asked to: Inhale 3 mL of Penthrox or placebo during their procedure. Complete a VAS scale to assess pain. Complete anxiety assessments pre- and post-operatively. Be monitored for complications such as bleeding and other adverse effects. This study will help determine the effectiveness of Penthrox as a non-invasive, quick-acting analgesic for minor sinus surgeries.

This description comes directly from the study's public registry record.

Talk to the study team

Amin Javer, MD  ·  604-806-9926  ·  sinusdoc@me.com

Leonora Beltran, MD  ·  604-806-9926  ·  lbeltranjimenez@providencehealth.bc.ca

Always discuss trial participation with your own doctor first.

Locations (1)

St Paul's Sinus CentreVancouver, British Columbia, CanadaRecruiting

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Source record: clinicaltrials.gov/study/NCT06750302