[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100613726":3},{"organization":4,"armGroups":7,"interventions":14,"overallOfficials":10,"centralContacts":23,"locations":29,"responsibleParty":51,"collaborators":10,"id":55,"slug":56,"hasResults":57,"nctId":58,"briefTitle":59,"officialTitle":59,"acronym":10,"eligibilityCriteria":60,"healthyVolunteers":57,"sex":61,"minAge":62,"maxAge":10,"enrollmentInfo":63,"targetDuration":10,"studyType":66,"phases":10,"briefSummary":67,"conditions":68,"keywords":74,"overallStatus":32,"whyStopped":10,"lastUpdateSubmitDate":79,"lastUpdatePostDateStruct":80,"startDateStruct":83,"completionDateStruct":85,"leadSponsor":87,"locationsCount":88},{"fullName":5,"class":6},"Akdeniz University","OTHER",[8],{"label":9,"type":10,"description":11,"interventionNames":12},"Orthopedic Surgery Patients in Semi-sitting Position",null,"ASA I-III patients undergoing orthopedic surgery in the semi-sitting position, monitored with NIRS, invasive arterial pressure, and routine parameters.",[13],"Diagnostic Test: Near-Infrared Spectroscopy (NIRS) Monitoring",[15],{"type":16,"name":17,"description":18,"armGroupLabels":19,"otherNames":20},"DIAGNOSTIC_TEST","Near-Infrared Spectroscopy (NIRS) Monitoring","Cerebral oxygenation will be monitored using NIRS in addition to standard intraoperative monitoring (heart rate, invasive arterial pressure, end-tidal CO₂, and blood gas analysis).",[9],[21,22],"Invasive Arterial Catheterization","Routine intraoperative monitoring including heart rate, non-invasive blood pressure, peripheral oxygen saturation, and end-tidal CO₂.",[24],{"name":25,"role":26,"phone":27,"phoneExt":10,"email":28},"Nesil Coşkunfırat, Prof Dr (M.D.)","CONTACT","+905326873426","nesildgr@yahoo.com",[30,47],{"facility":31,"status":32,"city":33,"state":10,"zip":34,"country":35,"countryCode":10,"cosmosGeoPoint":36,"geoPoint":41,"contacts":42},"Akdeniz University Hospital","RECRUITING","Antalya","07070","Turkey (Türkiye)",{"type":37,"coordinates":38},"Point",[39,40],30.69556,36.90812,{"lat":40,"lon":39},[43],{"name":44,"role":26,"phone":45,"phoneExt":10,"email":46},"İrem Keskinsoy Şimşir, Resident (M.D.)","+905309117017","driremkeskinsoy@gmail.com",{"facility":31,"status":32,"city":33,"state":10,"zip":34,"country":35,"countryCode":10,"cosmosGeoPoint":48,"geoPoint":50,"contacts":10},{"type":37,"coordinates":49},[39,40],{"lat":40,"lon":39},{"type":52,"investigatorFullName":53,"investigatorTitle":54,"investigatorAffiliation":5,"oldNameTitle":10,"oldOrganization":10},"PRINCIPAL_INVESTIGATOR","Nesil Coskunfirat","Prof Dr","100613726","evaluation-of-cerebral-oxygenation-during-orthopedic-surgeries-performed-in-the-beach-chair-position-under-general-anesthesia-100613726",false,"NCT07270341","Evaluation of Cerebral Oxygenation During Orthopedic Surgeries Performed in the Beach Chair Position Under General Anesthesia","Inclusion Criteria:\n\n* Patients scheduled for orthopedic surgery in the semi-sitting position\n* ASA physical status I-III\n* Voluntary participation with informed consent\n\nExclusion Criteria:\n\n* Patients younger than 18 years\n* Patients who do not provide consent\n* History of cerebral ischemia\n* History of head trauma\n* Previous neurosurgical intervention\n* Documented carotid stenosis ≥90%\n* Previous neck surgery","ALL","18 Years",{"count":64,"type":65},40,"ESTIMATED","OBSERVATIONAL","The goal of this observational study is to determine the correlation between cerebral oxygenation values measured by near-infrared spectroscopy (NIRS) and other routine monitoring parameters in patients placed in the semi-sitting position.\n\nThe primary questions investigated are :\n\nDo NIRS values correlate with heart rate, invasive mean arterial pressure, and end-tidal carbon dioxide?\n\nDo NIRS values reflect changes observed in arterial blood gas analysis?\n\nAre cerebral perfusion-related parameters associated with patients' comorbidities such as diabetes, obesity, and hypertension?\n\nResearchers will compare routine noninvasive monitoring (heart rate, blood pressure, peripheral oxygen saturation) with invasive arterial monitoring and NIRS to assess whether NIRS provides additional information for evaluating cerebral perfusion.\n\nParticipants will be monitored for:\n\nHeart rate\n\nInvasive mean arterial pressure\n\nEnd-tidal carbon dioxide\n\nArterial blood gas changes\n\nCerebral oxygenation with NIRS\n\nPatients' comorbidities (e.g., diabetes, obesity, hypertension) will also be recorded, and their association with perfusion-related parameters will be analyzed.",[69,70,71,72,73],"Cerebral Perfusion","Cerebral Oxygenation","Hemodynamic Monitoring","Semi-sitting Position","Orthopedic Surgical Procedures",[75,76,77,78],"cerebral perfusion","semi-sitting position","orthopedic surgery","cerebral oxygenation","2025-12-05",{"date":81,"type":82},"2025-12-08","ACTUAL",{"date":84,"type":82},"2024-10-01",{"date":86,"type":65},"2026-05-30",{"name":5,"class":6},2]