[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-studies-list:{\"conditionNormalized\":\"postoperative-atelectasis\",\"overallStatus\":[\"RECRUITING\",\"AVAILABLE\",\"NOT_YET_RECRUITING\"],\"orderBy\":\"LastUpdateSubmitDate:desc\",\"size\":25,\"offset\":0}":3,"health-study-condition:postoperative-atelectasis":24},{"pageToken":4,"total":5,"offset":6,"count":5,"results":7},null,4,0,[8,43,74,105],{"id":9,"slug":10,"hasResults":11,"nctId":12,"briefTitle":13,"officialTitle":14,"acronym":4,"eligibilityCriteria":15,"healthyVolunteers":11,"sex":16,"minAge":17,"maxAge":4,"enrollmentInfo":18,"targetDuration":4,"studyType":21,"phases":4,"briefSummary":22,"conditions":23,"keywords":26,"overallStatus":31,"whyStopped":4,"lastUpdateSubmitDate":32,"lastUpdatePostDateStruct":33,"startDateStruct":36,"completionDateStruct":38,"leadSponsor":40,"locationsCount":4},"100644915","hfnc-for-postoperative-atelectasis-after-laparoscopic-surgery-100644915",false,"NCT07676760","HFNC for Postoperative Atelectasis After Laparoscopic Surgery","The Role of High-Flow Nasal Cannula in Monitoring Postoperative Atelectasis With Lung Ultrasonography After Laparoscopic Surgery: A Prospective Observational Study","Inclusion Criteria:\n\n* Adult patients aged 18 years and older\n* Patients scheduled for elective laparoscopic surgery (general surgery, urology, gynecology)\n* Patients undergoing mechanical ventilation under general anesthesia\n* ASA physical status I-III\n* Patients providing written informed consent\n\nExclusion Criteria:\n\n* Severe or uncontrolled chronic obstructive pulmonary disease, asthma, or other chronic pulmonary diseases\n* Patients with atelectasis or pleural effusion detected on preoperative lung ultrasonography\n* Patients requiring intraoperative recruitment maneuver\n* ASA physical status IV or above\n* Patients receiving spinal or epidural anesthesia\n* Cases requiring conversion to laparoscopy or laparotomy\n* Patients refusing to participate","ALL","18 Years",{"count":19,"type":20},90,"ESTIMATED","OBSERVATIONAL","Pneumoperitoneum and Trendelenburg positioning during laparoscopic surgery promote atelectasis development, which has been reported in up to 90% of patients under general anesthesia and increases the risk of postoperative pulmonary complications. High-flow nasal cannula (HFNC) oxygen therapy may reduce post-extubation atelectasis through alveolar recruitment. This prospective observational cohort study aims to evaluate the role of HFNC in postoperative atelectasis monitored by lung ultrasonography (LUS) in patients undergoing elective laparoscopic surgery.",[24,25],"Postoperative Atelectasis","Postoperative Pulmonary Complications",[27,28,24,29,30],"High-Flow Nasal Cannula","Lung Ultrasonography","Laparoscopic Surgery","Pneumoperitoneum","NOT_YET_RECRUITING","2026-06-27",{"date":34,"type":35},"2026-06-30","ACTUAL",{"date":37,"type":20},"2026-07",{"date":39,"type":20},"2027-07",{"name":41,"class":42},"Bursa Yuksek Ihtisas Training and Research Hospital","OTHER_GOV",{"id":44,"slug":45,"hasResults":11,"nctId":46,"briefTitle":47,"officialTitle":48,"acronym":4,"eligibilityCriteria":49,"healthyVolunteers":11,"sex":16,"minAge":17,"maxAge":4,"enrollmentInfo":50,"targetDuration":4,"studyType":52,"phases":53,"briefSummary":55,"conditions":56,"keywords":57,"overallStatus":31,"whyStopped":4,"lastUpdateSubmitDate":63,"lastUpdatePostDateStruct":64,"startDateStruct":66,"completionDateStruct":68,"leadSponsor":70,"locationsCount":73},"100645381","eit-guided-visual-feedback-during-incentive-spirometry-for-postoperative-atelectasis-100645381","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.",{"count":51,"type":20},60,"INTERVENTIONAL",[54],"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.",[24],[58,59,60,61,62],"Electrical Impedance Tomography","Incentive Spirometry","Visual Feedback","Pulmonary Rehabilitation","Dorsal Ventilation","2026-06-26",{"date":65,"type":35},"2026-07-02",{"date":67,"type":20},"2026-07-01",{"date":69,"type":20},"2027-12-31",{"name":71,"class":72},"Shanghai Zhongshan Hospital","OTHER",1,{"id":75,"slug":76,"hasResults":11,"nctId":77,"briefTitle":78,"officialTitle":79,"acronym":80,"eligibilityCriteria":81,"healthyVolunteers":82,"sex":16,"minAge":17,"maxAge":83,"enrollmentInfo":84,"targetDuration":4,"studyType":21,"phases":4,"briefSummary":86,"conditions":87,"keywords":88,"overallStatus":95,"whyStopped":4,"lastUpdateSubmitDate":96,"lastUpdatePostDateStruct":97,"startDateStruct":99,"completionDateStruct":101,"leadSponsor":103,"locationsCount":73},"100617551","supine-vs-prone-position-and-atelectasis-assessed-by-lung-ultrasound-100617551","NCT07320092","Supine vs Prone Position and Atelectasis Assessed by Lung Ultrasound","Comparison of the Incidence of Atelectasis Assessed by Lung Ultrasound in Patients Undergoing Surgery in Supine and Prone Positions","LUS-ATELEC","Inclusion Criteria:\n\n* Adult patients aged 18 years or older.\n* Patients scheduled for elective surgery under general anesthesia.\n* Patients undergoing surgery in the supine or prone position.\n* Patients able to provide informed consent.\n\nExclusion Criteria:\n\n* Emergency surgical procedures.\n* Pre-existing severe pulmonary disease affecting lung ultrasound assessment.\n* Hemodynamic instability requiring urgent intervention.\n* Contraindications to lung ultrasound examination.",true,"80 Years",{"count":85,"type":20},80,"Atelectasis frequently develops during and after general anesthesia due to factors such as anesthesia-induced diaphragmatic dysfunction, reduced functional residual capacity, altered ventilation-perfusion matching, and surgical positioning. The development of atelectasis has been associated with postoperative hypoxemia and other pulmonary complications.\n\nLung ultrasound (LUS) has emerged as a reliable, radiation-free bedside imaging modality for the detection and monitoring of atelectasis. LUS allows assessment of lung aeration through standardized ultrasound patterns and scoring systems, enabling dynamic evaluation in the perioperative period.\n\nThis is a prospective, observational cohort study designed to compare the incidence and severity of atelectasis in patients undergoing surgery in the supine position versus the prone position under general anesthesia. Adult patients undergoing elective surgical procedures will be enrolled. No experimental intervention will be applied, and all anesthetic and surgical management will follow routine clinical practice.\n\nLung ultrasound examinations will be performed at predefined time points after induction of anesthesia and before extubation. A standardized lung ultrasound protocol and scoring system will be used to assess lung aeration loss and detect the presence of atelectasis.\n\nThe primary outcome of the study is the difference in atelectasis detected by lung ultrasound between supine and prone surgical positions. The secondary outcome is the change in lung ultrasound scores over time.\n\nThis study aims to clarify the effects of supine and prone positions on perioperative atelectasis and to support the clinical use of lung ultrasound as a noninvasive monitoring tool in perioperative and anesthetic practice..",[24],[89,90,91,92,93,94],"Lung Ultrasound","Atelectasis","Supine Position","Prone Position","General Anesthesia","Perioperative Care","RECRUITING","2026-03-23",{"date":98,"type":35},"2026-03-24",{"date":100,"type":35},"2025-09-15",{"date":102,"type":20},"2026-04-15",{"name":104,"class":72},"Istanbul University - Cerrahpasa",{"id":106,"slug":107,"hasResults":11,"nctId":108,"briefTitle":109,"officialTitle":109,"acronym":4,"eligibilityCriteria":110,"healthyVolunteers":11,"sex":16,"minAge":17,"maxAge":111,"enrollmentInfo":112,"targetDuration":4,"studyType":52,"phases":114,"briefSummary":115,"conditions":116,"keywords":119,"overallStatus":31,"whyStopped":4,"lastUpdateSubmitDate":123,"lastUpdatePostDateStruct":124,"startDateStruct":126,"completionDateStruct":128,"leadSponsor":129,"locationsCount":73},"100597631","evaluation-of-recruitment-effectiveness-in-patients-with-obstructive-sleep-apnea-syndrome-using-lung-ultrasound-100597631","NCT07061002","Evaluation of Recruitment Effectiveness in Patients With Obstructive Sleep Apnea Syndrome Using Lung Ultrasound","Inclusion Criteria:\n\n* Patients aged 18-65\n* American Society of Anesthesia I-III\n* Patients with consent to participate\n* Patients with preoperative OSA diagnosis (polysomnography or STOP-BANG≥3)\n\nExclusion Criteria:\n\n* American Society of Anesthesia \\>IV\n* Patients planned for postoperative intensive care follow-up 3. Cardiac surgery\n* Anesthesia outside the operating room\n* History of neuromuscular disease\n* Emergency surgical application\n* Invasive airway surgeries (pharynx, larynx)\n* Lung surgeries (pneumonectomy, lobectomy, etc.) 9. Presence of pregnancy","65 Years",{"count":113,"type":20},66,[54],"Patients with obstructive sleep apnea syndrome are at higher risk for respiratory complications after surgery. Oxygen depletion and respiratory distress are common in patients with obstructive sleep apnea syndrome. In this study, the effectiveness of the recruitment maneuver applied in the postoperative period will be investigated via lung ultrasound. Recruitment is a technique performed to improve the oxygen levels of patients. Patients diagnosed with obstructive sleep apnea syndrome between the ages of 18-65 will be included in the study and anesthesia and surgical procedures will be followed. The aim of the study is to compare the pulmonary complication rates between patients who underwent recruitment and those who did not, and to examine the effects of factors such as age and gender on these complications via lung ultrasound.",[24,117,118],"Lung Ultrasonography Score","Recruitment",[120,121,122],"Postoperative Pulmonary Atelectases","lung ultrasound score","recruitment maneuver","2025-07-02",{"date":125,"type":35},"2025-07-11",{"date":127,"type":20},"2025-07-25",{"date":67,"type":20},{"name":104,"class":72}]