| Not Yet Recruiting | Postoperative SpO₂/FiO₂ in Obese and Non-Obese Patients: Role of STOP-BANG NCT07188649 | Istinye University | — |
| Recruiting | Tissue Oximetry's Measurement in Cytoreductive Surgery With Hyperthermic Intraperitoneal Chemotherapy NCT06475261 | Fondazione Policlinico Universitario Agostino Gemelli IRCCS | — |
| Completed | Trans-Abdominal Fetal Pulse Oximetry - EFS-IDE NCT06405984 | Raydiant Oximetry, Inc. | EARLY_Phase 1 |
| Completed | Creatine and GAA for Brain Oxygenation NCT06371651 | University of Novi Sad, Faculty of Sport and Physical Education | N/A |
| Completed | Hypoxemia in the First 24 Hours After Trauma - an Observational Study NCT06256692 | Rigshospitalet, Denmark | — |
| Unknown | High Intensity Interval Training and Muscle Adaptations During PR NCT05858463 | University Hospital, Clermont-Ferrand | N/A |
| Recruiting | Comparison of Oxygen Reserve Index and Regional Cerebral Oxygen Saturation Indetermining Hypoxia in Obese Pati NCT06404151 | Dr. Lutfi Kirdar Kartal Training and Research Hospital | — |
| Unknown | HFNC vs Two Nare HFNC in Extubated Patients NCT06398951 | Peninsula Health | N/A |
| Completed | Wei Nasal Jet Tube vs Nasal Cannula Oxygen Support in Gastrointestinal Endoscopy Patients NCT05783050 | Bezmialem Vakif University | N/A |
| Completed | Muscles Oxygenation During Exercise in Fibrosing Interstitial Lung Diseases NCT05855447 | Saglik Bilimleri Universitesi | — |
| Completed | Sustainable Preservation of Essential Oxygen Resources: A Phase 4 Crossover Study of the BUFEO System: SAVE O2 NCT05677009 | Oxfo Corporation | N/A |
| Completed | High-flow Nasal Cannula for Pediatric Anesthetic Induction NCT05578131 | Seoul National University Hospital | N/A |
| Terminated | Oxygen Therapy in Patients With Chronic Heart Failure With Reduced Ejection Fraction NCT05913739 | Institut d'Investigació Biomèdica de Girona Dr. Josep Trueta | N/A |
| Completed | Research of the Effect of Reservoir Oxygen Mask Application on Respiratory Parameters in Sedated Adult Patient NCT05684900 | Derince Training and Research Hospital | — |
| Completed | Cerebral Regional Oxygenation with Manual Versus AutoFlow Ventilation NCT05834608 | Marmara University | — |
| Completed | The Effects of Nicardipine and Esmolol Applied for Controlled Hypotension NCT05430724 | Yuzuncu Yil University | N/A |
| Completed | Oxygen Reserve Index Predicting Hypoxemia NCT05480748 | Dr. Lutfi Kirdar Kartal Training and Research Hospital | — |
| Unknown | Early-initiated High Flow Oxygen Therapy vs Conventional Oxygen Therapy Among Patients With ARDS in the Course NCT05197686 | Pomeranian Medical University Szczecin | N/A |
| Completed | Pre-oxygenation With High-flow Nasal Cannula in Caesarian Section Under General Anesthesia NCT04711317 | Karolinska University Hospital | N/A |
| Completed | Validation of the O3 Regional Somatic Tissue Oxygenation Monitor NCT04584788 | Masimo Corporation | N/A |
| Completed | Quantification of Clinically Relevant Drug Induced Changes in HbO2 Affinity NCT04612270 | Medical University Innsbruck | N/A |
| Completed | Tissue Oxygen Saturation for Esophagectomy NCT04973046 | Shizuoka Cancer Center | — |
| Completed | Oxygenation Changes After 2-month Exercise in Sedentary Older Adults With Diabetes NCT04626453 | State University of New York at Buffalo | N/A |
| Completed | THRIVE Use in Pediatric Populations- Multi Site NCT04322994 | Stanford University | N/A |
| Unknown | Low-field Thoracic Magnetic Stimulation Increases Peripheral Oxygen Saturation Levels in COVID-19 Patients NCT04895267 | Elias Manjarrez | N/A |
| Completed | Awake Proning in COVID-19 Patients With Hypoxemic Respiratory Failure NCT04408222 | Columbia University | — |
| Unknown | Prone Positioning in Spontaneously Breathing Nonintubated Covid-19 Patient: a Pilot Study NCT04344106 | ELHARRAR Xavier | N/A |
| Completed | Effect of Dexmedetomidine on Brain Homeostasis and Neurocognitive Outcome NCT04266665 | Georgia Tsaousi | Phase 4 |
| Completed | Awake Prone Positioning for COVID-19 Acute Hypoxaemic Respiratory Failure NCT05866289 | Mohammed VI University Hospital | — |
| Completed | Incidence of Use of High-Flow Nasal Cannula Oxygen Therapy in Intensive Care Units Patients NCT04141956 | Nantes University Hospital | — |
| Completed | The Effect of Oxygen Therapy on 6MWD in PAH and CTEPH Patients With Hypoxemia NCT04207593 | Heidelberg University | Phase 2 |
| Terminated | Lower Inspiratory Oxygen Fraction for Preoxygenation NCT03665259 | E-DA Hospital | N/A |
| Completed | Effect of 8-week Intake of 2S-hesperidin on Performance, Body Composition and Biochemicals Markers in Amateur NCT04597983 | Francisco Javier Martínez Noguera | N/A |
| Recruiting | FreeDom: Innovative Strategy for the Management of COPD Exacerbations NCT03396172 | Laval University | N/A |
| Completed | Transnasal Humidified Rapid-Insufflation Ventilatory Exchange (THRIVE) Use in Pediatric Procedures NCT03430206 | Stanford University | N/A |
| Unknown | Investigation of Hemoglobin Oxygenation With Third Harmonic Generation Microscopy NCT03619356 | National Taiwan University Hospital | — |
| Completed | Alveolar Recruitment Maneuver During Pneumoperitoneum NCT03331471 | Gachon University Gil Medical Center | N/A |
| Completed | Validation of Next Generation Cerebral and Tissue Oximeter NCT03128372 | Medtronic - MITG | N/A |
| Completed | The Effect of Cryotherapy on Cerebral Hemodynamics Within Healthy Subjects NCT03185507 | University of Virginia | Phase 1 |
| Unknown | Identification of Desaturation Episodes by Means of Continuous Measurement of Oxygen Saturation During Hemodia NCT02987179 | Renal Research Institute | — |
| Unknown | Magnetic Resonance Flow Measurements of Mesenteric Arteries and Veins and Portal Vein NCT02875600 | Erasmus Medical Center | N/A |
| Completed | Prizma Pulse Oximeter Evaluation NCT03080688 | G Medical Innovations Ltd. | — |
| Completed | Supplementary Oxygen in Surgical and Medical Wards Evaluated by 30-day Mortality NCT03625700 | Hannibal Troensegaard | — |