[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100628560":3},{"organization":4,"armGroups":7,"interventions":10,"overallOfficials":10,"centralContacts":15,"locations":21,"responsibleParty":42,"collaborators":10,"id":45,"slug":46,"hasResults":47,"nctId":48,"briefTitle":49,"officialTitle":50,"acronym":10,"eligibilityCriteria":51,"healthyVolunteers":47,"sex":52,"minAge":53,"maxAge":54,"enrollmentInfo":55,"targetDuration":10,"studyType":58,"phases":10,"briefSummary":59,"conditions":60,"keywords":64,"overallStatus":72,"whyStopped":10,"lastUpdateSubmitDate":73,"lastUpdatePostDateStruct":74,"startDateStruct":77,"completionDateStruct":79,"leadSponsor":81,"locationsCount":82},{"fullName":5,"class":6},"Aydin Adnan Menderes University","OTHER",[8,12],{"label":9,"type":10,"description":11,"interventionNames":10},"Febrile Seizure Patients",null,"Children aged 6 months to 5 years presenting with febrile seizures who are enrolled prospectively. Blood samples are obtained within 30 minutes after seizure cessation to assess acute neuroendocrine response, including thyroxine (T4), epinephrine, and norepinephrine levels. Additional samples are collected prior to hospital discharge. Clinical data including seizure characteristics, recurrence, length of hospital stay, and need for pediatric intensive care unit admission are recorded. No experimental intervention is administered.",{"label":13,"type":10,"description":14,"interventionNames":10},"Febrile Controls","Age-matched febrile children without seizures enrolled as the control cohort. Blood samples are obtained during the febrile episode to measure thyroxine (T4), epinephrine, and norepinephrine levels. Clinical data related to fever characteristics are collected for comparison with the febrile seizure cohort. No experimental intervention is administered.",[16],{"name":17,"role":18,"phone":19,"phoneExt":10,"email":20},"Aykut Çağlar, MD","CONTACT","+905303337877","aykutcaglar@adu.edu.tr",[22],{"facility":23,"status":10,"city":24,"state":25,"zip":26,"country":27,"countryCode":10,"cosmosGeoPoint":28,"geoPoint":33,"contacts":34},"Aydin Adnan Menderes University Hospital","Aydin","Aydın","09010","Turkey (Türkiye)",{"type":29,"coordinates":30},"Point",[31,32],27.83963,37.84501,{"lat":32,"lon":31},[35,37,40],{"name":17,"role":18,"phone":19,"phoneExt":10,"email":36},"aykut.caglar@adu.edu.tr",{"name":38,"role":39,"phone":10,"phoneExt":10,"email":10},"Murat Ayar, MD","SUB_INVESTIGATOR",{"name":41,"role":39,"phone":10,"phoneExt":10,"email":10},"Şule Demir, MD",{"type":43,"investigatorFullName":17,"investigatorTitle":44,"investigatorAffiliation":5,"oldNameTitle":10,"oldOrganization":10},"PRINCIPAL_INVESTIGATOR","Professor","100628560","neuroendocrine-response-in-pediatric-febrile-seizures-100628560",false,"NCT07463222","Neuroendocrine Response in Pediatric Febrile Seizures","Febrile Seizures in Children: Association of Thyroxine (T4), Epinephrine, and Norepinephrine Levels With Seizure Characteristics and Hospital Outcomes-A Prospective Controlled Observational Study","Inclusion Criteria:\n\n* Children aged 6 months to 5 years presenting to the pediatric emergency department with fever (documented at presentation or reported by caregiver within the preceding 24 hours).\n* Case group: febrile seizure occurring in the context of a febrile illness.\n* Control group: febrile illness without seizure, selected to be age-matched to cases (e.g., within ±6 months).\n* Written informed consent obtained from a parent or legal guardian.\n\nExclusion Criteria:\n\n* Suspected or confirmed central nervous system infection (e.g., meningitis, encephalitis).\n* Prior diagnosis of epilepsy or history of afebrile seizures.\n* Seizures attributable to acute metabolic derangements at presentation (e.g., significant hypoglycemia, clinically relevant electrolyte disturbances).\n* Known thyroid disease or use of thyroid hormone\u002Fantithyroid medications.\n* Known adrenal disorders or use of systemic catecholamine infusions at enrollment.\n* Major chronic neurologic disorders or acute head trauma.\n* Inability to obtain blood samples within protocol-defined time windows.","ALL","6 Months","5 Years",{"count":56,"type":57},120,"ESTIMATED","OBSERVATIONAL","Febrile seizures are the most common seizure type in early childhood and usually occur during febrile illnesses. Although most febrile seizures are benign, the biological stress response during seizures is not fully understood. In particular, changes in thyroid hormones and stress-related hormones released by the sympathetic nervous system may play a role in seizure characteristics and clinical outcomes.\n\nThis prospective observational study aims to evaluate the neuroendocrine response in children presenting with febrile seizures by measuring serum thyroxine (T4), epinephrine, and norepinephrine levels. These measurements will be obtained during the acute phase after seizure cessation and compared with levels measured at recovery and with febrile children without seizures.\n\nThe study will examine the relationship between neuroendocrine marker levels and seizure characteristics such as seizure duration and recurrence, as well as clinical outcomes including length of hospital stay and need for pediatric intensive care unit admission.\n\nBy improving understanding of the hormonal stress response associated with febrile seizures, this study aims to contribute to the knowledge of seizure pathophysiology in childhood and may help identify biological factors associated with more severe clinical courses.",[61,62,63],"Febrile Convulsion","Neuroendocrine Stress Response","Fever",[63,65,66,67,68,69,70,71],"Febrile seizure","Neuroendocrine response","Pediatric emergency","Child","Thyroxine","Epinephrine","Norepinephrine","NOT_YET_RECRUITING","2026-03-05",{"date":75,"type":76},"2026-03-11","ACTUAL",{"date":78,"type":57},"2026-03",{"date":80,"type":57},"2027-03",{"name":5,"class":6},1]