[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100631228":3},{"organization":4,"armGroups":7,"interventions":8,"overallOfficials":12,"centralContacts":17,"locations":26,"responsibleParty":45,"collaborators":7,"id":48,"slug":49,"hasResults":50,"nctId":51,"briefTitle":52,"officialTitle":53,"acronym":7,"eligibilityCriteria":54,"healthyVolunteers":50,"sex":55,"minAge":56,"maxAge":57,"enrollmentInfo":58,"targetDuration":7,"studyType":61,"phases":7,"briefSummary":62,"conditions":63,"keywords":65,"overallStatus":71,"whyStopped":7,"lastUpdateSubmitDate":72,"lastUpdatePostDateStruct":73,"startDateStruct":76,"completionDateStruct":78,"leadSponsor":80,"locationsCount":81},{"fullName":5,"class":6},"Kocaeli University","OTHER",null,[9],{"type":6,"name":10,"description":11,"armGroupLabels":7,"otherNames":7},"Optic Nerve Sheath Diameter Measurement","Participants will undergo non-invasive ocular ultrasound measurement of optic nerve sheath diameter at five predefined time points: preoperatively, 10 minutes after spinal anesthesia, at the end of surgery, at postoperative 24 hours, and at postoperative 48 hours.",[13],{"name":14,"affiliation":15,"role":16},"Tulay Sahin, MD","Department of Anesthesiology and Reanimation Kocaeli University Faculty of Medicine Kocaeli, Turkey","PRINCIPAL_INVESTIGATOR",[18,23],{"name":19,"role":20,"phone":21,"phoneExt":7,"email":22},"Dilara Ayaz Ozcan, MD","CONTACT","+905053932937","dlryz96@gmail.com",{"name":14,"role":20,"phone":24,"phoneExt":7,"email":25},"+905322825454","tulaydogac@gmail.com",[27],{"facility":28,"status":7,"city":29,"state":30,"zip":31,"country":32,"countryCode":7,"cosmosGeoPoint":33,"geoPoint":38,"contacts":39},"Kocaeli University Faculty of Medicine Hospital","Köseköy","Kocaeli","41001","Turkey (Türkiye)",{"type":34,"coordinates":35},"Point",[36,37],30.00556,40.74012,{"lat":37,"lon":36},[40,41,42,43],{"name":19,"role":20,"phone":21,"phoneExt":7,"email":22},{"name":14,"role":20,"phone":24,"phoneExt":7,"email":25},{"name":14,"role":16,"phone":7,"phoneExt":7,"email":7},{"name":19,"role":44,"phone":7,"phoneExt":7,"email":7},"SUB_INVESTIGATOR",{"type":16,"investigatorFullName":46,"investigatorTitle":47,"investigatorAffiliation":5,"oldNameTitle":7,"oldOrganization":7},"Dilara Ayaz Özcan","Resident Physician, Department of Anesthesiology and Reanimation","100631228","optic-nerve-sheath-diameter-for-predicting-post-dural-puncture-headache-in-cesarean-section-patients-100631228",false,"NCT07497945","Optic Nerve Sheath Diameter for Predicting Post-Dural Puncture Headache in Cesarean Section Patients","Evaluation of Optic Nerve Sheath Diameter for Predicting Post-Dural Puncture Headache in Cesarean Section Patients: A Prospective Observational Study","Inclusion Criteria:\n\n* Women aged 18 to 45 years\n* Singleton pregnancy\n* Planned cesarean section (elective or emergency due to fetal indications)\n* Spinal anesthesia planned for the procedure\n* American Society of Anesthesiologists (ASA) physical status II-III\n* Normal coagulation parameters (INR less than 1.5, platelet count greater than 100,000\u002Fmm³)\n* Ability to provide written informed consent and cooperate with study procedures\n\nExclusion Criteria:\n\n* Known ophthalmologic diseases affecting the optic nerve or retina (e.g., glaucoma, optic atrophy)\n* Active eye infection or recent ocular surgery\n* Known intracranial pathology affecting cerebrospinal fluid dynamics (e.g., intracranial mass, hydrocephalus, idiopathic intracranial hypertension)\n* History of stroke or subarachnoid hemorrhage\n* Hypertensive disorders of pregnancy such as preeclampsia or eclampsia\n* Contraindications to spinal anesthesia (e.g., coagulopathy, anticoagulant therapy, infection at puncture site)\n* Allergy to local anesthetics\n* Conversion to general anesthesia due to failed or inadequate spinal block\n* Presence of moderate or severe preoperative headache or active primary headache disorders such as migraine","FEMALE","18 Years","45 Years",{"count":59,"type":60},220,"ESTIMATED","OBSERVATIONAL","Some patients develop headache after spinal anesthesia used during cesarean section. This condition is called post-dural puncture headache (PDPH). Early identification of patients at risk may improve patient care.\n\nThis study evaluates whether optic nerve sheath diameter (ONSD), measured using a non-invasive bedside ocular ultrasound technique, can help predict the development of PDPH.\n\nParticipants undergoing cesarean section with spinal anesthesia will undergo ONSD measurements at predefined perioperative time points. Participants will be followed postoperatively for the occurrence of headache.\n\nThe findings may help improve early recognition and management of PDPH.",[64],"Post Dural Puncture Headache",[66,67,68,69,70],"Optic Nerve Sheath Diameter","Cesarean Section","Spinal Anesthesia","Obstetric Anesthesia","Ocular Ultrasound","NOT_YET_RECRUITING","2026-03-23",{"date":74,"type":75},"2026-03-27","ACTUAL",{"date":77,"type":60},"2026-03-20",{"date":79,"type":60},"2027-03-31",{"name":5,"class":6},1]