[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100651010":3},{"organization":4,"armGroups":7,"interventions":14,"overallOfficials":20,"centralContacts":25,"locations":34,"responsibleParty":52,"collaborators":55,"id":58,"slug":59,"hasResults":60,"nctId":61,"briefTitle":62,"officialTitle":63,"acronym":10,"eligibilityCriteria":64,"healthyVolunteers":60,"sex":65,"minAge":66,"maxAge":10,"enrollmentInfo":67,"targetDuration":70,"studyType":71,"phases":10,"briefSummary":72,"conditions":73,"keywords":75,"overallStatus":36,"whyStopped":10,"lastUpdateSubmitDate":77,"lastUpdatePostDateStruct":78,"startDateStruct":81,"completionDateStruct":83,"leadSponsor":85,"locationsCount":86},{"fullName":5,"class":6},"Jilin University","OTHER",[8],{"label":9,"type":10,"description":11,"interventionNames":12},"Zaduo group",null,"All eligible patients presenting to the Endoscopy Center of Zaduo County People's Hospital during the recruitment period (December 1, 2025, to October 30, 2026) will be consecutively enrolled. Located at an average altitude of \\>4,200 m, Zaduo County presents a unique environment for this study. Eligible patients undergoing gastroscopy within the specified timeframe will be screened according to the inclusion and exclusion criteria. Endoscopic pathological findings will be compared to identify characteristics specific to the high-altitude cohort.",[13],"Diagnostic Test: Sedated gastroscopy",[15],{"type":16,"name":17,"description":18,"armGroupLabels":19,"otherNames":10},"DIAGNOSTIC_TEST","Sedated gastroscopy","All enrolled patients underwent sedated gastroscopy.",[9],[21],{"name":22,"affiliation":23,"role":24},"Dong Yang, Doctor","Zaduo County People's Hospital","PRINCIPAL_INVESTIGATOR",[26,31],{"name":27,"role":28,"phone":29,"phoneExt":10,"email":30},"Rucai Li, Doctor","CONTACT","86-18397118370","1271025352@qq.com",{"name":22,"role":28,"phone":32,"phoneExt":10,"email":33},"86-18243052038","yang_dong@jlu.edu.cn",[35],{"facility":23,"status":36,"city":37,"state":38,"zip":39,"country":40,"countryCode":41,"cosmosGeoPoint":42,"geoPoint":47,"contacts":48},"RECRUITING","Yushu","Qinghai","815300","China","CN",{"type":43,"coordinates":44},"Point",[45,46],97.00893,33.00118,{"lat":46,"lon":45},[49,51],{"name":50,"role":28,"phone":29,"phoneExt":10,"email":30},"Ruicai Li, Doctor",{"name":22,"role":24,"phone":10,"phoneExt":10,"email":10},{"type":24,"investigatorFullName":53,"investigatorTitle":54,"investigatorAffiliation":5,"oldNameTitle":10,"oldOrganization":10},"Dong Yang","Doctor",[56],{"name":23,"class":57},"UNKNOWN","100651010","a-prospective-cohort-study-on-endoscopic-features-of-upper-gastrointestinal-tract-at-high-altitude-zaduo-county-100651010",false,"NCT07755384","A Prospective Cohort Study on Endoscopic Features of Upper Gastrointestinal Tract at High Altitude (Zaduo County)","A Prospective Cohort Study on Endoscopic Features of Upper Gastrointestinal Tract at High Altitude --Zaduo County","Inclusion Criteria:\n\n* Aged ≥18 years;\n* Resided in Zaduo County for ≥6 months;\n* Undergoing painless (sedated) gastroscopy at our institution;\n* Absence of severe cardiopulmonary diseases or other conditions contraindicating gastroscopy;\n* Voluntary provision of written informed consent.\n\nExclusion Criteria:\n\n* Emergency endoscopy;\n* History of partial or total esophagogastrectomy;\n* Planned endoscopic ultrasound (EUS) or endoscopic submucosal dissection (ESD);\n* Comorbidities including severe cardiac, hepatic, or renal dysfunction, or malignant tumors;\n* Pregnancy or lactation, chronic alcoholism, or psychiatric disorders precluding cooperation;\n* Participation in other interventional clinical trials within the recent past;\n* Age \\\u003C18 years;\n* Incomplete endoscopic examination (e.g., poor preparation, technical failure);\n* Any other condition deemed unsuitable for participation by the investigator.","ALL","18 Years",{"count":68,"type":69},60,"ESTIMATED","6 Months","OBSERVATIONAL","To prospectively enroll participants undergoing gastroscopy at Zaduo County People's Hospital and perform paired analyses with matched cases from Jilin Province. This aims to characterize the endoscopic features of esophageal diseases specific to the high-altitude population in Zaduo County.",[74],"Reflux Esophagitis",[76],"High altitude; Reflux esophagitis; Hypoxia; Lower esophageal sphincter; Atrophic gastritis; Helicobacter pylori infection","2026-08-05",{"date":79,"type":80},"2026-08-10","ACTUAL",{"date":82,"type":80},"2025-12-01",{"date":84,"type":69},"2026-12-31",{"name":5,"class":6},1]