| Not Yet Recruiting | Ultrasound vs Clinical Parameters for Difficult Airway Prediction in Obesity NCT07528677 | Fatih Sultan Mehmet Training and Research Hospital | — |
| Recruiting | Comparative Study Between Combined Video Laryngoscope and Video Stylet Intubation Versus Combined Video Laryng NCT07470736 | National University of Malaysia | N/A |
| Recruiting | High-flow Nasal Cannula Versus Conventional Oxygen During Awake Tracheal Intubation With Difficult Airways NCT07384494 | Wenxian Li | N/A |
| Not Yet Recruiting | Validation of End-to-End Difficult Airway Pathway Planning Algorithm (EAP-LC) NCT07324317 | Eye & ENT Hospital of Fudan University | — |
| Recruiting | Predicting Difficult Intubation in Bariatric Surgery: Comparison of El Ganzouri Risk Index and Airway Ultrasou NCT07316179 | Antalya Training and Research Hospital | — |
| Enrolling By Invitation | Airway Ultrasound vs Clinical Predictors for Difficult Airway NCT07243106 | Tokat Gaziosmanpasa University | — |
| Completed | Examining the Effects of Anthropometric Measurements on Difficult Airway Prediction NCT07077317 | Kutahya Health Sciences University | — |
| Recruiting | Difficult Airway Incidence in Cardiovascular Surgery and a Prediction Model Development NCT06986187 | Diskapi Teaching and Research Hospital | — |
| Recruiting | Determination of the Frequency and Predictors of Difficult Intubation in Septoplasty Operations NCT06884592 | Başakşehir Çam & Sakura City Hospital | — |
| Not Yet Recruiting | AI-based Prediction Model of Difficult Tracheal Intubation Using Medical Image Parameters NCT06982144 | Mu Dong Liang | — |
| Recruiting | SEALion: Study on Supplemental Oxygenation Via Nasal Cannula for Young Children During Intubation NCT06683599 | Vinícius C Quintão, MD, MSc, PhD | N/A |
| Not Yet Recruiting | Ultrasound Airway Examination as a Tool for Detection of Difficult Intubation in Adult Patients NCT06700265 | National Cancer Institute, Egypt | — |
| Completed | Exploration and Application of Intelligent Difficult Airway Assessment Scheme NCT06626204 | Min Su | — |
| Active Not Recruiting | Using Ultrasound for Bougie Insertion in Difficult Airway Management NCT06836388 | Mohammed Gaber Saad | N/A |
| Recruiting | Sevoflurane Sedation as an Alternative for Awake Fiberoptic Intubation in Difficult Airway Patients NCT06601036 | Tanta University | N/A |
| Recruiting | Comparison of Two Sedation Regimens for Awake Fiberoptic Intubation NCT05736198 | University of Illinois at Chicago | — |
| Completed | Ultrasound Predictors of Difficult Airway in Adults NCT07383610 | Kutahya Health Sciences University | — |
| Completed | Prediction of Difficult Airway in Cesarean Section Using Preoperative Airway Assessment Tests NCT07340346 | Akdeniz University Hospital | — |
| Recruiting | Postoperative Memories and Level of Sedation for Tracheal Intubation Using Fiberoptic Bronchoscopy/Videolaryng NCT06514690 | Hospital Universitari Vall d'Hebron Research Institute | — |
| Completed | Midsagittal Tongue Measurement to Predict Difficult Airways NCT05519358 | Samsun University | — |
| Completed | Thyromental Height Test Versus Sternomental Displacement in Elderly NCT05414214 | Cairo University | — |
| Completed | Evaluation of a Flexible Videoscope Training Simulator NCT05327842 | Tongji Hospital | N/A |
| Unknown | Anatomical and Ultrasonographic Parameters to Predict Difficult Airway in Pediatrics NCT05336474 | Istanbul University | — |
| Unknown | Study on the Decision Support System of Difficult Airway Evaluation NCT06183060 | Peking University Third Hospital | — |
| Unknown | Incidence and Contributing Anthropometric Factors of Difficult Airway in Pediatric Surgical Patients NCT06000267 | University Childrens Hospital Belgrade | — |
| Completed | Difficult Airway and Ultrasonographic Evaluation NCT05347121 | Kocaeli University | — |
| Unknown | A Comparison of Fiberoptic Endotracheal Intubation Between the Intubating Laryngeal Tube Suction and the LMA P NCT04618926 | Bnai Zion Medical Center | — |
| Unknown | Research on Early Warning and Solution System of Difficult Airway in Perioperative Period Based on Artificial NCT04458220 | Shanghai Ninth People's Hospital Affiliated to Shanghai Jiao Tong University | — |
| Withdrawn | Airway Ultrasound Prediction and Correlation NCT03313947 | Vidya Raman | N/A |
| Completed | Videolaryngoscopy at Unanticipated Difficult Airway NCT06972394 | Tokat Gaziosmanpasa University | — |
| Completed | Comparison of a Conventional and a Realistic Self-modified Model NCT04005950 | Johannes Gutenberg University Mainz | — |
| Completed | Duble Lumen Intubation NCT03624439 | Lazarski University | N/A |
| Completed | Difficult Airway Prediction in Paediatric Anaesthesia NCT03404453 | Brno University Hospital | — |
| Completed | Evaluation of Intubation Rescue Techniques on Management of Difficult Airway NCT03545620 | Derince Training and Research Hospital | — |
| Unknown | Establishment of Airway Database for Surgical Patients NCT03125837 | Second Affiliated Hospital, School of Medicine, Zhejiang University | — |
| Unknown | Learning Curves of Intubation for Simulated Difficult Airway Scenarios by Manikin: Comparison of Combined Pent NCT02811562 | Ajou University School of Medicine | N/A |
| Completed | Comparison in Difficult Airway Scenario Induced in Patients With Laryngeal Mask Airway (LMA)-Classic™, LMA™ - NCT02979171 | Marmara University | Phase 4 |
| Withdrawn | Ultrasound to Predict a Pediatric Difficult Airway and Obstructive Sleep Apnea Syndrome in Children NCT02227134 | Vidya Raman | N/A |
| Completed | STorz Against Glidescope Effectiveness NCT01632683 | Oregon Health and Science University | N/A |
| Completed | F.R.O.N.T. Formula for Pre-operative Airway Assessment and Documentation NCT02313168 | University of Debrecen | — |
| Completed | Oxygen Insuflation and ArterialDesaturation During Tracheal Intubation in Children NCT01664234 | Medical University of Vienna | N/A |
| Unknown | Effects of Topical Anesthesia With Pressure Nebulized 2% Lidocaine During Awake Intubation NCT01185535 | Sun Yat-sen University | Phase 2 / Phase 3 |
| Completed | Evaluation of the Single Use Flexible Optical Scope Versus Multiple Use Flexible Optical Scopes for Intubation NCT01100957 | Rigshospitalet, Denmark | N/A |
| Completed | Air-Q Intubating Laryngeal Airway Versus the Laryngeal Mask Airway (LMA)-Proseal NCT01328405 | University of Wisconsin, Madison | Phase 4 |
| Completed | Different Techniques for Insertion of the ProSeal Laryngeal Mask Airway in Patients With Difficult Airway NCT00500916 | Medical University Innsbruck | N/A |