Clinical Trial

Randomized Clinical Trial for Tonsil Surgery in Adults With Obstructive Sleep Apnea and Enlarged Tonsils

Study acronym: TONOS
Not Yet Recruiting
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Summary
The aim is to investigate whether the tissue-preserving tonsil surgery technique is as effective as complete tonsil removal in the treatment of obstructive sleep apnea. The primary outcome measure is the change in the apnea-hypopnea index (AHI) before surgery and at 4-6, 24, and 60 months after surgery.
Protocol Amendment History 1 amendment
This ClinicalTrials.gov record has been amended once since 2026-05-06.
Trial Details
NCT Number NCT07580170
Lead Sponsor Turku University Hospital
Collaborators: Tampere University Hospital, Oulu University Hospital, Helsinki University Central Hospital
Conditions Sleep Apnea, Obstructives, Tonsil Hypertrophy
Enrollment 132 participants
Start Date 2026-10-01
Primary Completion 2031-01-01 (estimated)
Study Completion 2036-01-01 (estimated)
Updated on ClinicalTrials.gov 2026-06-03