[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-studies-list:{\"conditionNormalized\":\"postspinal-hypotension\",\"overallStatus\":[\"RECRUITING\",\"AVAILABLE\",\"NOT_YET_RECRUITING\"],\"orderBy\":\"LastUpdateSubmitDate:desc\",\"size\":25,\"offset\":0}":3,"health-study-condition:postspinal-hypotension":24},{"pageToken":4,"total":5,"offset":6,"count":5,"results":7},null,3,0,[8,38,70],{"id":9,"slug":10,"hasResults":11,"nctId":12,"briefTitle":13,"officialTitle":13,"acronym":4,"eligibilityCriteria":14,"healthyVolunteers":11,"sex":15,"minAge":16,"maxAge":17,"enrollmentInfo":18,"targetDuration":4,"studyType":21,"phases":4,"briefSummary":22,"conditions":23,"keywords":4,"overallStatus":26,"whyStopped":4,"lastUpdateSubmitDate":27,"lastUpdatePostDateStruct":28,"startDateStruct":31,"completionDateStruct":33,"leadSponsor":35,"locationsCount":4},"100634454","the-role-of-preoperative-internal-jugular-vein-collapsibility-and-perfusion-index-in-predicting-hypotension-after-spinal-anesthesia-in-elective-cesarean-sections-a-prospective-observational-study-100634454",false,"NCT07539896","The Role of Preoperative Internal Jugular Vein Collapsibility and Perfusion Index in Predicting Hypotension After Spinal Anesthesia in Elective Cesarean Sections: A Prospective Observational Study","Inclusion Criteria:\n\nAge 18-45 years Singleton pregnancy Scheduled for elective cesarean section Planned spinal anesthesia ASA physical status II\n\nExclusion Criteria:\n\nHypertensive disorders of pregnancy (e.g., preeclampsia, HELLP syndrome) Known significant cardiac disease or pulmonary hypertension Chronic kidney disease Hemoglobinopathies Multiple pregnancy Emergency cesarean section Conversion to general anesthesia Anatomical or pathological conditions preventing IJV ultrasound assessment -","FEMALE","18 Years","45 Years",{"count":19,"type":20},110,"ESTIMATED","OBSERVATIONAL","Spinal anesthesia is widely preferred for elective cesarean delivery due to its favorable safety profile and superior postoperative analgesia. However, post-spinal hypotension (PSH) remains a common complication, with reported incidence rates ranging from 40% to 70%, potentially compromising maternal hemodynamic stability and uteroplacental perfusion. Early identification of patients at high risk for PSH is therefore of critical clinical importance.\n\nThis prospective observational study aims to evaluate the predictive performance of preoperative internal jugular vein collapsibility index (IJV-CI), assessed by ultrasonography, and baseline perfusion index (PI), obtained via pulse oximetry, for the development of PSH in patients undergoing elective cesarean section under spinal anesthesia. While IJV-CI reflects intravascular volume status and preload, PI represents peripheral vascular tone; thus, their combined use may improve predictive accuracy.\n\nStudy Design This is a single-center, prospective observational study conducted in patients scheduled for elective cesarean delivery under spinal anesthesia. No additional intervention will be applied, and all anesthetic management will follow standard clinical practice.\n\nObjectives\n\nPrimary Objective:\n\nTo assess the ability of preoperative IJV collapsibility index (IJV-CI) and baseline perfusion index (PI) to predict post-spinal hypotension.\n\nSecondary Objectives:\n\nTo evaluate the relationship between IJV-CI and PI with:\n\nDuration and number of hypotensive episodes Minimum systolic and mean arterial pressure Total vasopressor requirement Incidence of intraoperative nausea and vomiting Pregnant women aged 18-45 years, ASA II, with singleton pregnancies scheduled for elective cesarean section under spinal anesthesia.\n\nInclusion Criteria Age 18-45 years Elective cesarean section Planned spinal anesthesia ASA physical status II Singleton pregnancy Exclusion Criteria Hypertensive disorders of pregnancy (e.g., preeclampsia, HELLP) Significant cardiac or pulmonary disease Chronic kidney disease Multiple pregnancy Emergency cesarean delivery Conversion to general anesthesia\n\nConditions preventing IJV ultrasonographic assessmentBaseline PI will be recorded preoperatively using standard pulse oximetry. IJV diameters will be measured via ultrasound, and the collapsibility index will be calculated as:\n\nIJVI: (Dmax-Dmin\u002FDmax)X100 Hemodynamic parameters will be recorded at 3-minute intervals from spinal anesthesia administration until delivery. Statistical analysis will include ROC curve analysis, correlation analysis, and logistic regression to evaluate predictive performance.",[24,25],"Postspinal Hypotension","Cesarean Birth","NOT_YET_RECRUITING","2026-04-14",{"date":29,"type":30},"2026-04-20","ACTUAL",{"date":32,"type":20},"2026-04-25",{"date":34,"type":20},"2026-06-25",{"name":36,"class":37},"Dr Abdurrahman Yurtaslan Ankara Oncology Training and Research Hospital","OTHER",{"id":39,"slug":40,"hasResults":11,"nctId":41,"briefTitle":42,"officialTitle":43,"acronym":4,"eligibilityCriteria":44,"healthyVolunteers":45,"sex":15,"minAge":46,"maxAge":47,"enrollmentInfo":48,"targetDuration":50,"studyType":21,"phases":4,"briefSummary":51,"conditions":52,"keywords":54,"overallStatus":59,"whyStopped":4,"lastUpdateSubmitDate":60,"lastUpdatePostDateStruct":61,"startDateStruct":63,"completionDateStruct":65,"leadSponsor":67,"locationsCount":69},"100578645","carotid-flow-measurements-in-pregnant-women-100578645","NCT06813989","Carotid Flow Measurements in Pregnant Women","Evaluation of the Effectiveness of Carotid Flow Measurements in Predicting Post-Spinal Hypotension in Pregnant Women","Inclusion Criteria:\n\n* \"Uncomplicated term pregnant women aged 20-40 years classified as ASA 1-2.\n\nExclusion Criteria:\n\n* Those diagnosed with preeclampsia or eclampsia or with systolic blood pressure above 160\n\nIndividuals with arrhythmia\n\nIndividuals with contraindications for spinal anesthesia\n\nIndividuals with Ba MI over 40\n\nThose with a gestational age under 36 weeks or over 41 weeks\n\nIndividuals with chronic kidney insufficiency (GRF under 60)\n\nThose with carotid stenosis or a history of previous cerebrovascular events\n\nPatients with placental anomalies\n\nThose initially planned for expected delivery but later switched to cesarean after being taken to trauma.\n\nPatients were taken to the operating room with an emergency cesarean decision\n\nIn case of failed spinal anaesthesia, those who switched to general anaesthesia before delivery",true,"20 Years","40 Years",{"count":49,"type":20},60,"2 Days","The goal of this observational study is to reveal the relation between carotid flow changes and post-spinal hypotension in pregnant women between the ages of 20-40. The main question it aims to answer is:\n\nDo the carotid flow blood flow measurements and corrected flow time change before and after spinal anaesthesia related to postspinal hypotension? Participants are already receiving spinal anaesthesia to receive a caesarean section. As part of their regular anaesthesia management protocol, they will answer questions about anaesthesia management. The participants will only examined by ultrasound twice.",[24,53],"Pregnant Women Undergoing Cesarean Delivery",[55,56,57,58],"carotid blood flow","corrected carotid flow time","postspinal hypotension","cesarean delivery","RECRUITING","2025-03-17",{"date":62,"type":30},"2025-03-18",{"date":64,"type":30},"2025-02-15",{"date":66,"type":20},"2025-06-01",{"name":68,"class":37},"Haseki Training and Research Hospital",1,{"id":71,"slug":72,"hasResults":11,"nctId":73,"briefTitle":74,"officialTitle":75,"acronym":4,"eligibilityCriteria":76,"healthyVolunteers":11,"sex":15,"minAge":16,"maxAge":17,"enrollmentInfo":77,"targetDuration":4,"studyType":21,"phases":4,"briefSummary":79,"conditions":80,"keywords":4,"overallStatus":26,"whyStopped":4,"lastUpdateSubmitDate":81,"lastUpdatePostDateStruct":82,"startDateStruct":84,"completionDateStruct":86,"leadSponsor":88,"locationsCount":69},"100581240","prediction-of-hypotension-after-spinal-anesthesia-in-cesarean-sections-using-non-invasive-measurement-methods-100581240","NCT06847737","Prediction of Hypotension After Spinal Anesthesia in Cesarean Sections Using Non-Invasive Measurement Methods","Prediction of Hypotension After Spinal Anesthesia in Cesarean Sections Using Non-Invasive Measurement Methods: Comparative Analysis of Perfusion Index, Pulse Variability Index, Tissue Oxygen Saturation and Tissue Hemoglobin Index","Inclusion Criteria:\n\n* Those who underwent elective cesarean section over the age of 18,\n* American Society of Anesthesia I and II,\n* Agree to participate in the study,\n\nExclusion Criteria:\n\n* \\\u003C18 or \\>45 years,\n* preeclampsia,\n* cardiovascular disorders,\n* fetal abnormalities,\n* not undergoing spinal anesthesia or undergoing general anesthesia during surgery,\n* not agreeing to participate in the study",{"count":78,"type":20},50,"To compare the incidence of hypotension after spinal anesthesia and the values of perfusion index, pleth variability index, tissue oxygen saturation and tissue hemoglobin index between those who developed hypotension and those who did not develop hypotension over time.",[24],"2025-02-21",{"date":83,"type":30},"2025-02-26",{"date":85,"type":20},"2025-03-01",{"date":87,"type":20},"2025-07-01",{"name":89,"class":37},"Istinye University"]