[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100622474":3},{"organization":4,"armGroups":7,"interventions":14,"overallOfficials":20,"centralContacts":21,"locations":27,"responsibleParty":47,"collaborators":20,"id":50,"slug":51,"hasResults":52,"nctId":53,"briefTitle":54,"officialTitle":54,"acronym":55,"eligibilityCriteria":56,"healthyVolunteers":52,"sex":57,"minAge":58,"maxAge":59,"enrollmentInfo":60,"targetDuration":20,"studyType":63,"phases":64,"briefSummary":66,"conditions":67,"keywords":71,"overallStatus":75,"whyStopped":20,"lastUpdateSubmitDate":76,"lastUpdatePostDateStruct":77,"startDateStruct":80,"completionDateStruct":82,"leadSponsor":84,"locationsCount":85},{"fullName":5,"class":6},"Region Stockholm","OTHER_GOV",[8],{"label":9,"type":10,"description":11,"interventionNames":12},"Ankle audiometry testing with B250","EXPERIMENTAL","The arm consist of 30 consecutive adults (18-64 years) with autophony and\u002For pulsatile tinnitus, of which at least 15 are affected by superior canal dehiscense syndrome. All subjects will undergo testing with ankle audiometry (intervention) according to the method described in PMID: 36634643",[13],"Diagnostic Test: Ankle audiometry performed with the B250 transducer",[15],{"type":16,"name":17,"description":18,"armGroupLabels":19,"otherNames":20},"DIAGNOSTIC_TEST","Ankle audiometry performed with the B250 transducer","Calibrated vibration stimulation with a frequency of 250 Hz is applied at the ankle with the B250 transducer starting at an intensity of 80 dB FL. An incremental increase\u002Fdecrease in the intensity of the applied bone vibration stimulus is employed in a manner similar to that performed during a standard pure tone hearing test. This is done in order to find the threshold in dB FL (at the ankle) for which the patient hears the sound in the target ear (right) is measured. The maximum applied intensity at the ankle will be 140 dB FL.",[9],null,[22],{"name":23,"role":24,"phone":25,"phoneExt":20,"email":26},"Luca Verrecchia, MD PhD","CONTACT","0046-724654523","luca.verrecchia@ki.se",[28],{"facility":29,"status":20,"city":30,"state":31,"zip":32,"country":33,"countryCode":34,"cosmosGeoPoint":35,"geoPoint":40,"contacts":41},"Karolinska University Hospital, Hearing and Balance Unit","Stockholm","Huddinge","141 57","Sweden","SE",{"type":36,"coordinates":37},"Point",[38,39],18.06871,59.32938,{"lat":39,"lon":38},[42,43,45],{"name":23,"role":24,"phone":25,"phoneExt":20,"email":26},{"name":23,"role":44,"phone":20,"phoneExt":20,"email":20},"PRINCIPAL_INVESTIGATOR",{"name":46,"role":44,"phone":20,"phoneExt":20,"email":20},"Zheer Tawfique, MD PhD student",{"type":44,"investigatorFullName":48,"investigatorTitle":49,"investigatorAffiliation":5,"oldNameTitle":20,"oldOrganization":20},"Luca Verrecchia","Principal investigator","100622474","the-diagnostic-accuracy-of-ankle-audiometry-performed-with-the-b250-for-superior-canal-dehiscence-syndrome-in-patients-affected-by-pulsatile-tinnitus-andor-autophony-disorders-100622474",false,"NCT07384091","The Diagnostic Accuracy of Ankle Audiometry Performed With the B250 for Superior Canal Dehiscence Syndrome in Patients Affected by Pulsatile Tinnitus and\u002For Autophony Disorders","AA by B250","Inclusion Criteria:\n\n* Age between 18 and 64 years.\n* Patients with symptoms of autophony and\u002For pulsatile tinnitus either due to a confirmed diagnosis of SCDS or not due to SCDS.\n\nExclusion Criteria:\n\n* Severe sensorineural hearing.\n* Middle ear or ear canal pathologies.\n* Vulnerable patients.\n* Confirmed intolerance or contraindication for body (ankle) vibratory stimulation.\n* Anatomical body anomalies affecting normal testing procedure or interpretation of results.","ALL","18 Years","64 Years",{"count":61,"type":62},30,"ESTIMATED","INTERVENTIONAL",[65],"NA","The goal of this clinical trial is to learn if the ankle audiometry test performed with the B250 bone conduction transducer can identify patients with superior canal dehiscence syndrome from those without among subjects presenting with autophony (a hearing condition where you hear your own body sounds) and\u002For pulsatile tinnitus.\n\nThe main question it aims to answer:\n\n• Can ankle audiometry performed with B250 identify the condition of superior canal dehiscence syndrome among patients with autophony and\u002For pulsatile tinnitus, with a significance level of 80% and power level of 15%?\n\nStudy participants will undergo ankle audiometry testing with the B250 and the threshold in dB FL (at the ankle) for which the patient hears the sound in the target ear will be measured.",[68,69,70],"Superior Canal Dehiscence Syndrome","Autophony","Pulsatile Tinnitus",[72,73,74],"SCDS","Ankle audiometry","B250","NOT_YET_RECRUITING","2026-01-26",{"date":78,"type":79},"2026-02-03","ACTUAL",{"date":81,"type":62},"2026-02-01",{"date":83,"type":62},"2026-12-31",{"name":5,"class":6},1]