[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-studies-list:{\"conditionNormalized\":\"sleep-apnea-obstructives\",\"overallStatus\":[\"RECRUITING\",\"AVAILABLE\",\"NOT_YET_RECRUITING\"],\"orderBy\":\"LastUpdateSubmitDate:desc\",\"size\":25,\"offset\":0}":3,"health-study-condition:sleep-apnea-obstructives":49},{"pageToken":4,"total":5,"offset":6,"count":5,"results":7},null,1,0,[8],{"id":9,"slug":4,"hasResults":10,"nctId":11,"briefTitle":12,"officialTitle":13,"acronym":14,"eligibilityCriteria":15,"healthyVolunteers":10,"sex":16,"minAge":17,"maxAge":18,"enrollmentInfo":19,"targetDuration":4,"studyType":22,"phases":23,"briefSummary":25,"conditions":26,"keywords":29,"overallStatus":36,"whyStopped":4,"lastUpdateSubmitDate":37,"lastUpdatePostDateStruct":38,"startDateStruct":41,"completionDateStruct":43,"leadSponsor":45,"locationsCount":48},"100639804",false,"NCT07580170","Randomized Clinical Trial for Tonsil Surgery in Adults With Obstructive Sleep Apnea and Enlarged Tonsils","Multicenter, National, Randomized, Patient-Blinded, Parallel Group, Non-Inferiority Trial To Compare Tonsillotomy Versus Extracapsular Tonsillectomy in Adults With Obstructive Sleep Apnea and Tonsil Hypertrophy: The TONOS Trial.","TONOS","Inclusion Criteria:\n\n* BMI \\\u003C 35\n* Tonsil size 2 - 4\n* Otherwise healthy patient fit for tonsil surgery\n* Apnea-hypopnea index \\> 15\n* Obstructive sleep apnea symptoms\n\nExclusion Criteria:\n\n* Pathological hemostasis or use of anticoagulation\n* Craniofacial deformities\n* Neurological condition with muscular hypotonia\n* Other surgical treatment for OSA","ALL","18 Years","65 Years",{"count":20,"type":21},132,"ESTIMATED","INTERVENTIONAL",[24],"NA","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.",[27,28],"Sleep Apnea, Obstructives","Tonsil Hypertrophy",[30,31,32,33,34,35],"sleep apnea","tonsillectomy","tonsillotomy","intracapsular tonsillectomy","adults","tonsil hypertrophy","NOT_YET_RECRUITING","2026-05-31",{"date":39,"type":40},"2026-06-03","ACTUAL",{"date":42,"type":21},"2026-10-01",{"date":44,"type":21},"2036-01-01",{"name":46,"class":47},"Turku University Hospital","OTHER_GOV",4,""]