| Not Yet Recruiting | High-Flow Nasal Cannula After Major Abdominal Surgery to Prevent Postoperative Pulmonary Complications NCT07528404 | Uijeongbu St. Mary Hospital | N/A |
| Recruiting | Effects of Periodic Recruitment Maneuvers on Atelectasis and Respiratory Mechanics During Elective Spine Surge NCT07325812 | Prof. Dr. Cemil Tascıoglu Education and Research Hospital Organization | N/A |
| Recruiting | The Effect of Oscillation and Lung Expansion (OLE) Therapy in Prolonged Mechanical Ventilated Patients With At NCT07451405 | Capital Medical University | N/A |
| Not Yet Recruiting | The Effect of the 5T Teach-Back Method on Respiratory Exercise and Incentive Spirometer Training NCT07350616 | Suleyman Demirel University | N/A |
| Not Yet Recruiting | Optimal Interval for Periodic Alveolar Recruitment Maneuvers Achieving 90% Lung Re-expansion During Intraopera NCT07239557 | Sixth Affiliated Hospital, Sun Yat-sen University | N/A |
| Recruiting | Automated Intraoperative Lung Recruitment Maneuvers in Major Laparoscopic Surgery NCT07349784 | Bakirkoy Dr. Sadi Konuk Research and Training Hospital | N/A |
| Not Yet Recruiting | VCV vs PRVC in Pediatric Anesthesia; an EIT- and LS-based Study NCT07182539 | Vittore Buzzi Children's Hospital | N/A |
| Completed | Positive-Pressure vs Suction Extubation in Cesarean Patients NCT07251686 | Medipol University | N/A |
| Completed | Can Atelectasis Be Prevented With Oxygen Reserve Index (ORI) Monitoring? NCT07050719 | Antalya Training and Research Hospital | N/A |
| Not Yet Recruiting | İn This Study, Patients Undergoing Bariatric Surgery Will be Divided Into Two Groups. The Control Group Will R NCT07041567 | Istanbul University | N/A |
| Recruiting | Intraoperative Paravertebral Block and Postoperative Complications NCT07211529 | Tongji Hospital | N/A |
| Recruiting | Physiological Effects and Safety of Continuous High-frequency Oscillatory Ventilation in Mechanical Ventilatio NCT06662630 | Shanghai Zhongshan Hospital | N/A |
| Not Yet Recruiting | To Assess the Effectiveness of Three Distinct Mechanical Assisted Sputum Evacuation Apparatuses in the Treatme NCT06631716 | Sir Run Run Shaw Hospital | — |
| Completed | Pediatric Bronchoscopy and LUS NCT06658613 | Marmara University | — |
| Recruiting | Open Lung Protective Extubation Following General Anesthesia NCT06296173 | Centre hospitalier de l'Université de Montréal (CHUM) | N/A |
| Completed | Impact of High Versus Lower Oxygen Fraction Prior to Extubation on Postoperative Pulmonary Atelectasis Measure NCT06538740 | Beth Israel Deaconess Medical Center | N/A |
| Withdrawn | Detection of SpO2-oscillations of Low Ventilated Areas NCT02022969 | Medical University of Vienna | — |
| Recruiting | Regional Distribution of Ventilation at Different Respiratory Rates NCT06171477 | Region Örebro County | N/A |
| Completed | Pulmonary Ultrasound for the Assessment of Atelectasis in Anesthetized Children Using a Laryngeal Mask Airway. NCT06214312 | Centre Hospitalier Universitaire Saint Pierre | — |
| Not Yet Recruiting | Effect of Epidural Analgesia on Regional Lung Ventilation in Parturient Women as Assessed by Thoracic Impedanc NCT06195774 | Erasme University Hospital | — |
| Recruiting | Clinical Utility of Portable Dynamic Chest X Ray (DDR) in the ICU NCT06538376 | Brigham and Women's Hospital | N/A |
| Completed | Single Use Flexible Bronchoscopes in Interventional Pulmonary Procedures NCT06144398 | Clinical Hospital Centre Zagreb | N/A |
| Completed | AI Assisted Detection of Chest X-Rays NCT06075836 | Oxford University Hospitals NHS Trust | — |
| Completed | Effects of Anesthesia on Atelectasis NCT06790901 | Zonguldak Bulent Ecevit University | — |
| Unknown | Alveolar Recruitment Maneuvers on Reduction of Lung Atelectasis in Bariatric Surgery by Using Lung Ultrasound NCT05720351 | Tanta University | N/A |
| Completed | Restoration of Pulmonary Compliance After Laparoscopic Gynaecologic Surgery Using a Recruitment Maneuver NCT06203665 | Panagiota Griva | N/A |
| Completed | Pulmonary Ventilation After Fiberoptic Bronchoscopy Using EIT NCT05875662 | Peking University People's Hospital | — |
| Completed | Atelectasis After Inhalation or Intravenous Induction in Pediatric Anesthesia NCT06069414 | Vittore Buzzi Children's Hospital | — |
| Completed | Detecting Lung's Closing Pressure by Capnography NCT05873998 | Hospital Privado de Comunidad de Mar del Plata | — |
| Completed | Effect of High Versus Low Fraction of Inspired Oxygen During Alveolar Recruitment NCT06494410 | Egymedicalpedia | N/A |
| Completed | Effects of Different Inhalation Oxygen Concentrations on Postoperative Atelectasis NCT05627024 | China Medical University, China | Phase 4 |
| Completed | Functional Residual Capacity Under Apnoeic Oxygenation with Different Flow Rates in Children NCT05672329 | Thomas Riva | N/A |
| Completed | Lung Ultrasound Score (LUS) Change in Robotic and Laparoscopic Urologic Surgeries NCT05528159 | Istanbul University | — |
| Completed | Effect of Thoracic Block Technique on Arterial Blood Gases in Children With Atelectasis on Mechanical Ventilat NCT05821998 | Cairo University | N/A |
| Completed | Ultrasound-guided Lung Recruitment Maneuvers for Postoperative Pediatric Atelectasis NCT05777018 | Tanta University | N/A |
| Unknown | Effects of Invasive Mechanical Ventilation on the Right Ventricular Function NCT05710419 | University of Giessen | — |
| Completed | Multi-Reader Retrospective Study Examining Carebot AI CXR 2.0.21-v2.01 Implementation in Everyday Radiology Cl NCT05963945 | Carebot s.r.o. | — |
| Completed | Retrospective Study of Carebot AI CXR Performance in Preclinical Practice NCT05594485 | Carebot s.r.o. | — |
| Completed | Interest of Tracheal Extubation in Positive Pressure on Postoperative Oxygenation in Adult Digestive Surgery NCT04381949 | University Hospital, Rouen | N/A |
| Completed | Perioperative Atelectasis in Orthopaedic Surgery: a Prospective Study NCT05384795 | Eric Albrecht | — |
| Completed | The Incidence of Postoperative Pulmonary Complications in Patients With a Positive and Negative AIR-Test Durin NCT05345743 | Academisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA) | — |
| Completed | Effect of Thoracic Block Technique on Atelectasis in Children on Mechanical Ventilation NCT05480202 | Cairo University | N/A |
| Unknown | Comparing Innovative and Traditional Ventilation Strategies on Atelectasis and Prognosis in Elderly Patients NCT06021249 | Fujian Medical University Union Hospital | N/A |
| Completed | Minimizing Lung Injury During Laparoscopy in Steep Trendelenburg Position NCT04900714 | University Hospital, Antwerp | N/A |
| Completed | The Effect of Oxygen Therapy on Atelectasis NCT05509764 | Zonguldak Bulent Ecevit University | — |
| Completed | Comparison of Two FiO2 (1 or 0.5) for Tracheal Extubation in Post-anesthesia Care Unit NCT04879290 | University Hospital, Caen | N/A |
| Unknown | Effects of Small-dose S-ketamine on Anesthesia-induced Atelectasis in Anesthetized Patients Accessed by Pulmon NCT04745286 | Beijing Tiantan Hospital | EARLY_Phase 1 |
| Unknown | Effect Posterior QLB on Atelectasis NCT04830280 | Zonguldak Bulent Ecevit University | N/A |
| Completed | Variation of Atelectasis Score After High-frequency Percussions in Severe Acquired Brain Injury NCT05630079 | Fondazione Don Carlo Gnocchi Onlus | — |
| Completed | Predictive Value of Ariscat Index In The Development of Pulmonary Complication After Major Abdominal Cancer Su NCT04663958 | Dr Abdurrahman Yurtaslan Ankara Oncology Training and Research Hospital | — |
| Completed | Air Test In Diagnosis Of Postoperative Lung Atelectasis NCT04458623 | Assiut University | N/A |
| Completed | The Accuracy of Pediatric Air Test as a Non-invasive Atelectasis Diagnostic Tool NCT04506203 | Hospital Universitario La Paz | N/A |
| Completed | Atelectasis by Lung Ultrasonography in Cesarean Sections NCT04591327 | Derince Training and Research Hospital | — |
| Completed | Usage of High Flow Nasal Cannula in Preventing Desaturations in Elderly Patients Going for Lower Limb Surgerie NCT06054022 | Universiti Kebangsaan Malaysia Medical Centre | N/A |
| Completed | PEEP Incremental and Decremental Alveolar Recruitment of Critically Ill Corona Virus Disease-19 (COVID-19) Pat NCT04360837 | Szeged University | N/A |
| Completed | Ventilator-driven Alveolar Recruitment Maneuver NCT04258202 | Samsung Medical Center | N/A |
| Completed | Effects of Pneumoperitoneum on Dynamic Alveolar Stress-strain in Anesthetized Pediatric Patients NCT04183309 | Hospital Privado de Comunidad de Mar del Plata | — |
| Completed | Effects of Recruitment Maneuver on Functional Residual Capacity NCT04208737 | Istanbul University | N/A |
| Completed | Role of Lung Ultrasonography in Diagnosing Atelectasis in Robotic Pelvic Surgeries NCT04006665 | Rajiv Gandhi Cancer Institute & Research Center, India | — |
| Terminated | Avoiding Neuromuscular Blockers to Reduce Complications NCT03962725 | Beth Israel Deaconess Medical Center | Phase 4 |
| Unknown | Application of High Flow Nasal Cannula for Prevention of Post-extubation Atelectasis in Children Undergoing Su NCT03817177 | Seoul National University Hospital | N/A |
| Completed | Effect of Spontaneous Breathing on Atelectasis During Induction of General Anesthesia in Patients in Infants NCT03739697 | Seoul National University Hospital | N/A |
| Completed | Prevention of Atelectasis, Via High Flow Nasal Cannula to Obtain a PEP, During General Anesthesia in Children NCT03592589 | Assistance Publique Hopitaux De Marseille | N/A |
| Completed | Evaluation of Effect of Different Ventilator Mods on Atelectasis in Patients Undergoing Laparoscopic Surgery NCT03614845 | Derince Training and Research Hospital | N/A |
| Completed | The Effect of Lung Recruitment Maneuver on Postoperative Atelectasis in Children NCT03453762 | Seoul National University Hospital | N/A |
| Completed | Continuous Positive Airway Pressure Decreased Lung Collapse During General Anesthesia Induction in Pediatric P NCT03461770 | Hospital Privado de Comunidad de Mar del Plata | N/A |
| Unknown | Effects of Succinylcholine on Nonintubated Thoracoscopic Surgery NCT03469323 | National Taiwan University Hospital | N/A |
| Unknown | Bronchoscopy Anesthesia and Neuropsychological Assessment in Children (BANACH) Study NCT03359044 | Second Affiliated Hospital of Wenzhou Medical University | — |
| Completed | Zero Positive End-expiratory Pressure Before Emergence Prevents Postoperative Atelectasis. NCT03351946 | Region Västmanland | N/A |
| Completed | Estimation of Perioperative Atelectasis NCT03352336 | Region Västmanland | — |
| Completed | Atelectasis Formation Using HFJV During Stereotactic Solid Organ Ablations NCT03378752 | Karolinska Institutet | — |
| Terminated | Evaluation of BAL Procedure With Ambu aScope 3 Large in Patients in an ICU Setting NCT03581474 | Ambu A/S | N/A |
| Completed | Effects of Mechanical Ventilation Guided by Transpulmonary Pressure on Gas Exchange During Robotic Surgery: a NCT03153592 | Azienda Ospedaliero Universitaria Maggiore della Carita | N/A |
| Completed | Low Tidal MEChanical Ventilation Against NO Ventilation During Cardiopulmonary Bypass Heart Surgery NCT03098524 | CMC Ambroise Paré | N/A |
| Completed | Impact of Lung Recruitment Maneuvers on Driving Pressure in Cardiac Surgery NCT03976947 | University Hospital, Caen | — |
| Unknown | Incentive Spirometry in Non-critically Ill Hospitalized Patients With Acute Respiratory Failure NCT02873000 | Jewish Hospital, Cincinnati, Ohio | N/A |
| Completed | Pilot Evaluation Comparing Regional Distribution of Ventilation During Lung Expansion Therapy NCT03083379 | University of Virginia | N/A |
| Completed | Comparing the Effectiveness of Lung Expansion Therapy in Adult Human Subjects NCT02892773 | University of Virginia | N/A |
| Unknown | Evaluation of Thoracic Impedance Tomography During Robotic Surgery NCT04194177 | Federico II University | N/A |
| Completed | Monitoring Lung Recruitment Maneuver in Anesthetized Morbidly Obese NCT03694665 | Hospital Privado de Comunidad de Mar del Plata | N/A |
| Completed | MetaNeb® Chest X-ray Study NCT02871258 | Hill-Rom | N/A |
| Completed | Evaluating the Effectiveness of Incentive Spirometry NCT02952027 | Lifespan | N/A |
| Completed | Change of Regional Ventilation During Spontaneous Breathing After Lung Surgery NCT02779595 | Wuerzburg University Hospital | — |
| Completed | Efficacy and Ventilatory Responses to VHI in Atelectasis Patients NCT02768350 | Khon Kaen University | N/A |
| Completed | Evaluation of The MetaNeb® System to Reduce Postoperative Pulmonary Complications NCT02627742 | Hill-Rom | N/A |
| Completed | Pulmonary Evaluation With Ultrasound in Different Levels of PEEP NCT03211936 | Instituto do Cancer do Estado de São Paulo | N/A |
| Completed | Peroperative Use of Positive End-expiratory Pressure Prevents Formation of Atelectasis as Studied by Computeri NCT02548416 | Region Västmanland | N/A |
| Completed | Driving Pressure And EFL in Adult Cardiac Surgery NCT03064659 | Ospedale San Raffaele | — |
| Completed | Evaluation of Regional Distribution of Ventilation During Labor With or Without Epidural Analgesia NCT02523755 | Universitair Ziekenhuis Brussel | Phase 4 |
| Completed | Comparison of Three Scores for Ultrasound Assessment and Monitoring of Pulmonary Aeration NCT02450825 | Centre hospitalier de l'Université de Montréal (CHUM) | N/A |
| Terminated | Evaluation of a Disposable Flexible Bronchoscope, aScope IV NCT02255838 | University of Louisville | N/A |
| Completed | Lung Recruitment Improves Right Ventricle Performance NCT02795208 | Hospital Privado de Cordoba, Argentina | N/A |
| Completed | Role of Lung Ultrasound Imaging in the Comparison of Two Mechanical Ventilation Strategies During Laparotomy NCT02055807 | Centre hospitalier de l'Université de Montréal (CHUM) | N/A |
| Completed | Perioperative Change of Regional Ventilation During Spontaneous Breathing NCT02419196 | Wuerzburg University Hospital | — |
| Unknown | Can 10 Seconds Inspiratory Hold Open Atelectasis in Mechanically Ventilated Patients? NCT02285894 | Oslo University Hospital | N/A |
| Unknown | Mechanical Ventilation During Cardiac Surgery NCT02090205 | Ospedale San Raffaele | N/A |
| Completed | Study of the Application of CPAP to Reduce Complications and Improve Lung Cancer Ablation Radiofrequency Treat NCT02117908 | Sara Varea | N/A |
| Completed | High Fresh Gas Flow After Intubation NCT02216006 | Region Västmanland | N/A |
| Completed | Electrical Impedance Imaging of Patients on Mechanical Ventilation NCT02232841 | Colorado State University | — |
| Completed | Lung Recruitment Assessment With Lung Ultrasound In Pediatric Patient Scheduled For Laparoscopic Surgery NCT02824146 | Hospital Privado de Comunidad de Mar del Plata | N/A |
| Unknown | Role of Lung Ultrasound and Pulsed-wave Doppler in Lung Consolidations in Mechanically Ventilated Patients NCT02100449 | Centre hospitalier de l'Université de Montréal (CHUM) | N/A |
| Completed | What is the Effective Pulmonary Physiotherapy Method in Critically Care Patients? NCT02645695 | ILKE KUPELI | N/A |
| Completed | Postoperative Lung Collapse Prevention NCT04712084 | Lennart Magnusson | N/A |
| Completed | Digital Air Leak Monitoring for Patients Undergoing Lung Resection NCT01810172 | Nova Scotia Health Authority | N/A |
| Completed | Role of Lung Ultrasound Imaging for Intraoperative Monitoring of Atelectasis During Laparoscopic Surgery NCT01749436 | Centre hospitalier de l'Université de Montréal (CHUM) | — |
| Completed | Alveolar Recruitment Maneuver During Cesarean Section Improves Lung Compliance NCT01826968 | General Hospital Of Pyrgos | Phase 2 |
| Completed | Chest Compression Technique in Infants NCT01858844 | Hospital Sirio-Libanes | N/A |
| Completed | Effect of Hyperoxia and Hypergravity on Lung Ventilation and Perfusion NCT01993394 | Direction Centrale du Service de Santé des Armées | N/A |
| Completed | Physiotherapy Technique Decreases Respiratory Complications After Cardiac Operation NCT01416519 | Santa Casa de Votuporanga | N/A |
| Completed | Bi-PAP vs Sham Bi-PAP on Pulmonary Function in Morbidly Obese Patients After Bariatric Surgery NCT03438383 | Evangelismos Hospital | N/A |
| Unknown | Impact of Spontaneous Breathing on Ventilation Distribution in Obese Patients NCT01382927 | Technische Universität Dresden | — |
| Completed | Efficacy of Percussive Ventilation Therapy (MetaNeb ®) Compared With Mucolytic Agents for Atelectasis in the M NCT02168387 | Duke University | Phase 4 |
| Completed | Effects of Spontaneous Breathing Activity on Atelectasis Formation During General Anaesthesia NCT01073917 | Technische Universität Dresden | N/A |
| Unknown | Video-guided Percutaneous Tracheostomy (PCT): A Feasibility Study NCT01013298 | Tel-Aviv Sourasky Medical Center | N/A |
| Unknown | Video-guided Percutaneous Tracheostomy (PCT) Versus Conventional PCT: Comparing Safety and Efficacy NCT01012518 | Tel-Aviv Sourasky Medical Center | N/A |
| Completed | Does High Intraoperative Inspired Oxygen Reduce Postoperative Arterial Oxygen Saturation? NCT00715741 | University of Utah | Phase 2 / Phase 3 |
| Unknown | Influence of Techniques of Chest Physiotherapy in the Pediatric Intensive Care NCT03112811 | Cliniques universitaires Saint-Luc- Université Catholique de Louvain | N/A |
| Completed | Dornase Alpha Versus Hypertonic Saline for Lung Atelectasis in Non-Cystic Fibrosis Patients NCT00671723 | University of Oklahoma | N/A |
| Completed | Atelectasis During Delivery - Comparing Cesarian (c) -Section and Labor NCT00665405 | University of Sao Paulo | — |
| Completed | Impact of Nebulized Dornase Alpha on Mechanically Ventilated Patients NCT01095276 | University of Medicine and Dentistry of New Jersey | N/A |