[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100652642":3},{"organization":4,"armGroups":7,"interventions":10,"overallOfficials":10,"centralContacts":12,"locations":18,"responsibleParty":33,"collaborators":10,"id":37,"slug":38,"hasResults":39,"nctId":40,"briefTitle":41,"officialTitle":42,"acronym":43,"eligibilityCriteria":44,"healthyVolunteers":39,"sex":45,"minAge":46,"maxAge":10,"enrollmentInfo":47,"targetDuration":10,"studyType":50,"phases":10,"briefSummary":51,"conditions":52,"keywords":55,"overallStatus":60,"whyStopped":10,"lastUpdateSubmitDate":61,"lastUpdatePostDateStruct":62,"startDateStruct":65,"completionDateStruct":67,"leadSponsor":69,"locationsCount":70},{"fullName":5,"class":6},"Ankara City Hospital Bilkent","OTHER",[8],{"label":9,"type":10,"description":11,"interventionNames":10},"Elective Gastrointestinal tumor surgery group",null,"Patients scheduled for elective gastrointestinal tumor surgery under general anesthesia who undergo preoperative carotid Doppler assessment and a passive leg raising (PLR) maneuver",[13],{"name":14,"role":15,"phone":16,"phoneExt":10,"email":17},"Seçilnaz Ünlü Tuncer, MD","CONTACT","+90 553 177 36 18","secilnaz.unlu@gmail.com",[19],{"facility":20,"status":10,"city":21,"state":10,"zip":22,"country":23,"countryCode":10,"cosmosGeoPoint":24,"geoPoint":29,"contacts":30},"Ankara Bilkent City Hospital","Ankara","06100","Turkey (Türkiye)",{"type":25,"coordinates":26},"Point",[27,28],32.85427,39.91987,{"lat":28,"lon":27},[31],{"name":14,"role":15,"phone":32,"phoneExt":10,"email":17},"+90 5531773618",{"type":34,"investigatorFullName":35,"investigatorTitle":36,"investigatorAffiliation":5,"oldNameTitle":10,"oldOrganization":10},"PRINCIPAL_INVESTIGATOR","Seçilnaz Ünlü Tuncer","MD","100652642","carotid-doppler-changes-after-passive-leg-raising-for-prediction-of-post-induction-hypotension-in-gastrointestinal-tumor-surgery-100652642",false,"NCT07777159","Carotid Doppler Changes After Passive Leg Raising for Prediction of Post-Induction Hypotension in Gastrointestinal Tumor Surgery","Dynamic Changes in Carotid Artery Doppler Parameters Following Passive Leg Raising for Prediction of Post-Induction Hypotension in Patients Undergoing Elective Gastrointestinal Tumor Surgery","PLR","Inclusion Criteria:\n\n* Adults aged 18 years or older\n* Patients scheduled for elective gastrointestinal tumor surgery\n* Surgery planned under general anesthesia\n* Body mass index (BMI) \\\u003C40 kg\u002Fm²\n* Written informed consent provided\n\nExclusion Criteria:\n\n* Refusal to participate or inability to obtain written informed consent\n* BMI ≥40 kg\u002Fm²\n* Pregnancy\n* Emergency surgery\n* Difficult intubation\n* ASA physical status ≥IV\n* Pediatric patients (\\\u003C18 years)\n* Inability to perform carotid Doppler measurements\n* Arrhythmia other than continuous sinus rhythm or uncontrolled cardiac arrhythmia\n* Severe cardiac dysfunction or left ventricular ejection fraction \\\u003C40%\n* Severe valvular heart disease\n* Clinically significant autonomic nervous system disorders\n* Inadequate noninvasive blood pressure monitoring or inability to obtain the required hemodynamic measurements\n* Active sepsis or systemic inflammatory syndrome\n* Severe peripheral vascular disease or significant carotid artery stenosis (\\>50%)\n* Severe pulmonary disease or advanced respiratory failure\n* Implanted cardiac device (pacemaker\u002FICD)\n* Baseline mean arterial pressure (MAP) \\\u003C65 mmHg\n* Preoperative systolic blood pressure \\>190 mmHg or diastolic blood pressure \\>110 mmHg","ALL","18 Years",{"count":48,"type":49},99,"ESTIMATED","OBSERVATIONAL","This prospective study aims to investigate the role of the passive leg raise maneuver prior to anesthesia induction in predicting post-induction hypotension among elective gastrointestinal tumor surgery patients using carotid artery Doppler parameters.",[53,54],"Post-induction Hypotension (PIH)","Gastrointestinal Tumor Surgery",[56,57,58,59],"Carotid Doppler","Passive Leg Raise","Post-induction Hypotension","Anesthesia İnduction","NOT_YET_RECRUITING","2026-08-17",{"date":63,"type":64},"2026-08-20","ACTUAL",{"date":66,"type":49},"2026-09-01",{"date":68,"type":49},"2026-12",{"name":5,"class":6},1]