[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100645381":3},{"organization":4,"armGroups":7,"interventions":20,"overallOfficials":26,"centralContacts":26,"locations":31,"responsibleParty":53,"collaborators":26,"id":55,"slug":56,"hasResults":57,"nctId":58,"briefTitle":59,"officialTitle":60,"acronym":26,"eligibilityCriteria":61,"healthyVolunteers":57,"sex":62,"minAge":63,"maxAge":26,"enrollmentInfo":64,"targetDuration":26,"studyType":67,"phases":68,"briefSummary":70,"conditions":71,"keywords":73,"overallStatus":79,"whyStopped":26,"lastUpdateSubmitDate":80,"lastUpdatePostDateStruct":81,"startDateStruct":84,"completionDateStruct":86,"leadSponsor":88,"locationsCount":89},{"fullName":5,"class":6},"Shanghai Zhongshan Hospital","OTHER",[8,14],{"label":9,"type":10,"description":11,"interventionNames":12},"EIT-Guided Visual Feedback","EXPERIMENTAL","Participants complete one standardized session of incentive spirometry while viewing the real-time EIT screen. Trained staff provide target-directed feedback to increase ventilation in dependent dorsal lung regions.",[13],"Behavioral: EIT-Guided Incentive Spirometry",{"label":15,"type":16,"description":17,"interventionNames":18},"Standardized Verbal Guidance","ACTIVE_COMPARATOR","Participants complete the same standardized session of incentive spirometry with the EIT screen concealed. Trained staff provide standardized verbal instructions without imaging feedback.",[19],"Behavioral: Standardized Incentive Spirometry Guidance",[21,27],{"type":22,"name":23,"description":24,"armGroupLabels":25,"otherNames":26},"BEHAVIORAL","EIT-Guided Incentive Spirometry","Participants perform three sets of 10 incentive-spirometry breaths while viewing real-time electrical impedance tomography images. Trained staff provide standardized, target-directed feedback to increase ventilation in dependent dorsal lung regions.",[9],null,{"type":22,"name":28,"description":29,"armGroupLabels":30,"otherNames":26},"Standardized Incentive Spirometry Guidance","Participants perform three sets of 10 incentive-spirometry breaths with the EIT screen concealed. Trained staff provide standardized verbal instructions on posture, slow sustained inspiration, a 2- to 3-second breath hold, and rest between breaths, without imaging feedback.",[15],[32],{"facility":33,"status":26,"city":34,"state":35,"zip":36,"country":37,"countryCode":38,"cosmosGeoPoint":39,"geoPoint":44,"contacts":45},"Zhongshan Hospital, Fudan University","Shanghai","Shanghai Municipality","200032","China","CN",{"type":40,"coordinates":41},"Point",[42,43],121.45806,31.22222,{"lat":43,"lon":42},[46,51],{"name":47,"role":48,"phone":49,"phoneExt":26,"email":50},"Kai Liu, BSc","CONTACT","+86-13512136346","Liu.kai1@zs-hospital.sh.cn",{"name":47,"role":52,"phone":26,"phoneExt":26,"email":26},"PRINCIPAL_INVESTIGATOR",{"type":54,"investigatorFullName":26,"investigatorTitle":26,"investigatorAffiliation":26,"oldNameTitle":26,"oldOrganization":26},"SPONSOR","100645381","eit-guided-visual-feedback-during-incentive-spirometry-for-postoperative-atelectasis-100645381",false,"NCT07681232","EIT-Guided Visual Feedback During Incentive Spirometry for Postoperative Atelectasis","Effects of Electrical Impedance Tomography-Guided Visual Feedback During Incentive Spirometry on the Immediate Ventilation Distribution in Postoperative Patients With Atelectasis: A Prospective Randomized Controlled Trial","Inclusion Criteria:\n\n1. Age 18 years or older.\n2. Admitted to an intensive care unit or postoperative monitoring unit after major thoracic or upper-abdominal surgery; tracheal tube removed; spontaneously breathing; and clinically stable.\n3. Alert and able to understand and follow incentive-spirometry and EIT instructions.\n4. Bedside lung ultrasound shows atelectasis or markedly reduced aeration in dorsal or posterolateral lung regions, with the lung-ultrasound assessment recorded.\n5. Baseline EIT during quiet breathing in a semi-recumbent position shows insufficient dorsal ventilation with potential for improvement; dorsal ventilation fraction below 50%.\n6. Written informed consent provided by the participant or legally authorized representative according to the ethics-approved process, with participant re-consent when decision-making capacity returns.\n\nExclusion Criteria:\n\n1. Ongoing invasive mechanical ventilation or noninvasive ventilation, or high-flow nasal oxygen when study conditions cannot be maintained stably.\n2. Hemodynamic instability or inability to tolerate a semi-recumbent position.\n3. Inability to cooperate with training or impaired consciousness.\n4. Unsuitable for EIT monitoring, including an implanted pacemaker or defibrillator incompatible with the device, severe skin disease at the electrode-belt site, or known relevant allergy.\n5. Severe underlying pulmonary disease likely to substantially affect ventilation distribution and obscure the intervention effect.\n6. Chest-wall deformity or severe scoliosis affecting EIT image quality.\n7. Body mass index greater than 35 kg\u002Fm2.\n8. Pregnancy or breastfeeding.\n9. Current participation in another interventional clinical trial that could interfere with study outcomes.\n10. Any other condition that, in the investigator's judgment, makes participation inappropriate.","ALL","18 Years",{"count":65,"type":66},60,"ESTIMATED","INTERVENTIONAL",[69],"NA","This single-center randomized controlled trial will evaluate whether real-time visual feedback from electrical impedance tomography (EIT) improves the immediate distribution of lung ventilation during incentive spirometry in adults with postoperative atelectasis. Approximately 60 participants will be randomized 1:1 to receive either EIT-guided visual feedback or standardized verbal guidance during one session of 30 incentive-spirometry breaths. The primary outcome is the change in dorsal ventilation fraction from before training to 5 minutes after training. Secondary outcomes include inspiratory capacity, ventilation homogeneity, dependent silent spaces, end-expiratory lung impedance, oxygenation, in-hospital intubation or reintubation, and intervention-related adverse events.",[72],"Postoperative Atelectasis",[74,75,76,77,78],"Electrical Impedance Tomography","Incentive Spirometry","Visual Feedback","Pulmonary Rehabilitation","Dorsal Ventilation","NOT_YET_RECRUITING","2026-06-26",{"date":82,"type":83},"2026-07-02","ACTUAL",{"date":85,"type":66},"2026-07-01",{"date":87,"type":66},"2027-12-31",{"name":5,"class":6},1]