[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100579026":3},{"organization":4,"armGroups":7,"interventions":18,"overallOfficials":10,"centralContacts":23,"locations":29,"responsibleParty":47,"collaborators":10,"id":51,"slug":52,"hasResults":53,"nctId":54,"briefTitle":55,"officialTitle":55,"acronym":10,"eligibilityCriteria":56,"healthyVolunteers":53,"sex":57,"minAge":10,"maxAge":10,"enrollmentInfo":58,"targetDuration":61,"studyType":62,"phases":10,"briefSummary":63,"conditions":64,"keywords":66,"overallStatus":32,"whyStopped":10,"lastUpdateSubmitDate":70,"lastUpdatePostDateStruct":71,"startDateStruct":74,"completionDateStruct":76,"leadSponsor":78,"locationsCount":79},{"fullName":5,"class":6},"Shanghai 6th People's Hospital","OTHER",[8,14],{"label":9,"type":10,"description":11,"interventionNames":12},"Difficult laparoscopic appendectomy",null,"(1) operative time more than 75% of the overall study cases (2) severe intraoperative vascular or uncontrolled bleeding (3) conversion to open approach",[13],"Other: Observations on preoperative and intraoperative factors influencing the difficulty of surgery",{"label":15,"type":10,"description":16,"interventionNames":17},"Non-difficult laparoscopic appendectomy","the remaining of the entire study cases excluding the difficult cases",[13],[19],{"type":6,"name":20,"description":21,"armGroupLabels":22,"otherNames":10},"Observations on preoperative and intraoperative factors influencing the difficulty of surgery","Age, body mass index, gender, inflammatory indicators, previous history of abdominal surgery, underlying disease",[9,15],[24],{"name":25,"role":26,"phone":27,"phoneExt":10,"email":28},"Ling Zhan, Dr","CONTACT","08615821120972","rebecca0428zhan@163.com",[30],{"facility":31,"status":32,"city":33,"state":34,"zip":35,"country":36,"countryCode":37,"cosmosGeoPoint":38,"geoPoint":43,"contacts":44},"Shanghai Sixth People's Hospital","RECRUITING","Shanghai","Shanghai Municipality","200233","China","CN",{"type":39,"coordinates":40},"Point",[41,42],121.45806,31.22222,{"lat":42,"lon":41},[45],{"name":46,"role":26,"phone":27,"phoneExt":10,"email":28},"Ling Zhan, Doctor",{"type":48,"investigatorFullName":49,"investigatorTitle":50,"investigatorAffiliation":5,"oldNameTitle":10,"oldOrganization":10},"PRINCIPAL_INVESTIGATOR","Ling Zhan","Principal Investigator","100579026","nomogram-for-predicting-difficult-laparoscopic-appendectomy-100579026",false,"NCT06818942","Nomogram for Predicting Difficult Laparoscopic Appendectomy","Inclusion Criteria:\n\n* Clinical diagnosis of acute appendicitis\n* Participants who underwent laparoscopic appendectomy\n\nExclusion Criteria:\n\n* Participants refused or could not tolerate laparoscopic appendectomy\n* Incomplete preoperative examination or missed information","ALL",{"count":59,"type":60},500,"ESTIMATED","3 Months","OBSERVATIONAL","No prior studies have stratified the difficulty of laparoscopic appendectomy (LA). The investigators aimed to investigate preoperative factors as indicators of difficult LAs based on the experience of surgical trainees and to develop a predictive model accordingly.",[65],"Emergencies",[67,68,69],"Laparoscopic appendectomy","Surgical difficulty","Training program","2026-05-02",{"date":72,"type":73},"2026-05-07","ACTUAL",{"date":75,"type":73},"2025-01-26",{"date":77,"type":60},"2027-12-31",{"name":5,"class":6},1]