[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100589649":3},{"organization":4,"armGroups":7,"interventions":8,"overallOfficials":7,"centralContacts":16,"locations":22,"responsibleParty":40,"collaborators":7,"id":42,"slug":43,"hasResults":44,"nctId":45,"briefTitle":46,"officialTitle":47,"acronym":7,"eligibilityCriteria":48,"healthyVolunteers":44,"sex":49,"minAge":50,"maxAge":51,"enrollmentInfo":52,"targetDuration":7,"studyType":55,"phases":7,"briefSummary":56,"conditions":57,"keywords":59,"overallStatus":24,"whyStopped":7,"lastUpdateSubmitDate":63,"lastUpdatePostDateStruct":64,"startDateStruct":67,"completionDateStruct":69,"leadSponsor":71,"locationsCount":72},{"fullName":5,"class":6},"The Second Affiliated Hospital of Chongqing Medical University","OTHER",null,[9,13],{"type":10,"name":11,"description":12,"armGroupLabels":7,"otherNames":7},"DIAGNOSTIC_TEST","Peripheral venous blood","Peripheral venous blood was collected before and after the surgery to measure the total serum calcium levels.",{"type":10,"name":14,"description":15,"armGroupLabels":7,"otherNames":7},"Arterial blood","Arterial blood was collected before anesthesia induction and after removal of the artificial airway to measure ionized calcium levels.",[17],{"name":18,"role":19,"phone":20,"phoneExt":7,"email":21},"Guangyou Duan, PhD","CONTACT","+86 183 2337 6014","duangy@hospital.cqmu.edu.cn",[23],{"facility":5,"status":24,"city":25,"state":26,"zip":27,"country":28,"countryCode":29,"cosmosGeoPoint":30,"geoPoint":35,"contacts":36},"RECRUITING","Chongqing","Chongqing Municipality","400010","China","CN",{"type":31,"coordinates":32},"Point",[33,34],106.55771,29.56026,{"lat":34,"lon":33},[37,38],{"name":18,"role":19,"phone":20,"phoneExt":7,"email":21},{"name":18,"role":39,"phone":7,"phoneExt":7,"email":7},"PRINCIPAL_INVESTIGATOR",{"type":41,"investigatorFullName":7,"investigatorTitle":7,"investigatorAffiliation":7,"oldNameTitle":7,"oldOrganization":7},"SPONSOR","100589649","the-effect-of-serum-calcium-levels-on-postoperative-pain-a-prospective-observational-study-100589649",false,"NCT06957158","The Effect of Serum Calcium Levels on Postoperative Pain: A Prospective Observational Study","The Effect of Serum Calcium Levels on Postoperative Pain in Patients Undergoing Abdominal Surgery: A Prospective Observational Study","Inclusion Criteria:\n\n* Aged 18-70 years old\n* American Society of Anesthesiologists Classification I-III\n* Patients undergoing elective abdominal surgery under general anesthesia\n* Patients participate voluntarily and sign an informed consent form\n\nExclusion Criteria:\n\n* Patients with a history of severe disease\n* Patients with chronic preoperative pain and\u002For long-term analgesic use\n* Patients with hearing disorders or verbal communication difficulties\n* Patients with psychiatric disorders or cognitive dysfunction\n* Patients requiring mechanical ventilation or ICU admission after surgery\n* Patients with a history of substance or alcohol abuse Patients who could not cooperate with the study for any reason","ALL","18 Years","70 Years",{"count":53,"type":54},350,"ESTIMATED","OBSERVATIONAL","This is a prospective observational study. To investigate the effect of serum calcium levels on postoperative pain in patients undergoing abdominal surgery, and to determine whether changes in serum calcium levels are a risk factor for postoperative pain.",[58],"Postoperative Pain",[60,61,62],"Serum calcium levels","Postoperative pain","Ionized calcium levels","2025-06-24",{"date":65,"type":66},"2025-06-27","ACTUAL",{"date":68,"type":54},"2025-07",{"date":70,"type":54},"2025-12",{"name":5,"class":6},1]