| Recruiting | Pediatric Airway: Noninferiority Trial of Devices for Intubation Assessment NCT07351227 | University of Sao Paulo General Hospital | N/A |
| Not Yet Recruiting | Evaluation of Anterior Neck Ultrasound in Predicting Difficult Airway in Obese Patients NCT07346768 | Gaziantep City Hospital | — |
| Completed | The Videolaryngoscopy Versus Direct Laringoscopy for Residents Intubation Study NCT06842082 | Hospital Universitario Lucus Augusti | N/A |
| Recruiting | Classification and Prediction of Difficult Awake Tracheal Intubation With Flexible Bronchoscopes NCT06953414 | Universitätsklinikum Hamburg-Eppendorf | — |
| Active Not Recruiting | Intubation Conditions During ERCP With Lidocaine Aerosol Plus Low-dose Cisatracurium or Conventional-dose Cisa NCT07185074 | Jiangang Song | Phase 4 |
| Completed | The Effect of Local Anesthetic Techniques on Hemodynamic Response and Postoperative Sore Throat in Double-Lume NCT06705595 | V.K.V. American Hospital, Istanbul | N/A |
| Completed | Comparison of Different Methods for Determining Endotracheal Cuff Pressure NCT06107998 | Suleyman Demirel University | N/A |
| Unknown | Comparison Among Three Different Video Scope Guided Nasotracheal Intubation. NCT05534451 | Union Hospital, Tongji Medical College, Huazhong University of Science and Technology | N/A |
| Completed | Place of the Video-laryngoscope in Learning Intubation by Simulation NCT05859542 | Mongi Slim Hospital | — |
| Unknown | The Study of Ciprofol for the Suppression of Cardiovascular Responses to Tracheal Intubation NCT06095570 | The Second Affiliated Hospital of Hainan Medical University | Phase 4 |
| Unknown | Community Medical Center, Continuous Quality Improvement Project, Rapid Sequence Intubation NCT05505799 | Community Medical Center, Toms River, NJ | N/A |
| Unknown | Correct Endotracheal Tube Placement Using Topographical Landmarks NCT05439109 | Rajiv Gandhi Cancer Institute & Research Center, India | N/A |
| Recruiting | Effect of Tramadol on Postoperative Sore Throat After General Anesthesia NCT04991493 | Affiliated Cancer Hospital of Shantou University Medical College | Phase 4 |
| Completed | Video- Or Direct Laryngoscopy for Endotracheal Intubation in Newborns NCT04994652 | University College Dublin | N/A |
| Completed | Standard Versus Flexible Tip Bougie for Videolaryngoscopy NCT04973176 | University Hospitals Coventry and Warwickshire NHS Trust | N/A |
| Completed | An MRI Study of the Sniffing, Neutral and Extended Head and Neck Positions NCT05002790 | University Hospitals Coventry and Warwickshire NHS Trust | N/A |
| Unknown | Comparison of Effectiveness of Different Airway Management Methods During Percutaneous Tracheostomy NCT04872881 | Bozyaka Training and Research Hospital | Phase 4 |
| Completed | Evidence-based Algorithm for the Expected Difficult Intubation NCT04863846 | Universitätsklinikum Hamburg-Eppendorf | — |
| Completed | Can Endotracheal Tube Fluctuation With Epigastric Compression Be Used as a Confirmation Method for Endotrachea NCT06542406 | Duzce University | N/A |
| Completed | Tracheal Tube Cuff Shape and Pressure NCT04591769 | Taipei Veterans General Hospital, Taiwan | N/A |
| Completed | Effect of Using Barrier Devices for Intubation in COVID-19 Patients NCT04412226 | Derince Training and Research Hospital | — |
| Unknown | Thyromental Height Test as a New Method for Prediction of Difficult Intubation in Obese Patients NCT04439487 | Medical University of Silesia | — |
| Completed | Observation of the Pressure Changes of the Endotracheal Tube Cuff in the Head and Neck Surgery Under General A NCT03938493 | Yonsei University | — |
| Unknown | The Assessment of the Pilot Balloon Palpation Method in Different-sized Endotracheal Tubes NCT03938506 | Yonsei University | — |
| Unknown | Effect of Using Endotracheal Tube Introducer for Intubation During Mechanical Chest Compressions in a Manikin NCT04116333 | Derince Training and Research Hospital | N/A |
| Withdrawn | GlideScope Groove Versus Macintosh Blade for Double-Lumen Endotracheal Tube Intubation NCT01488695 | London Health Sciences Centre Research Institute OR Lawson Research Institute of St. Joseph's | N/A |
| Completed | Post-extubation Assessment of Laryngeal Symptoms and Severity NCT03726086 | Johns Hopkins University | — |
| Unknown | Video Laryngoscopy Versus Direct Laryngoscopy for Nasotracheal Intubation NCT03775317 | Louisiana State University Health Sciences Center in New Orleans | N/A |
| Completed | Tracheal Intubation Using Videolaryngoscope vs Fiberoptic Bronchoscope in Patients With Cervical Immobilizatio NCT03759561 | Seoul National University Hospital | N/A |
| Unknown | CeraShield™ Endotracheal Tube Feasibility Study NCT03716713 | N8 Medical, LLC | N/A |
| Unknown | Oral Amantadine, IV Amantadine and Hemodynamic Response to Laryngoscopy NCT03612921 | Assiut University | Phase 2 |
| Completed | Ropivacaine vs Lidocaine in the Endotracheal Tube Cuff on Post-Operative Sore Throat NCT03563963 | University of Saskatchewan | N/A |
| Completed | Soiled Airway Tracheal Intubation and the Effectiveness of Decontamination by Paramedics NCT03599687 | Yorkshire Ambulance Service NHS Trust | — |
| Terminated | Force of Endotracheal Tube Extubation; Esophagus vs. Trachea NCT03480425 | University of Saskatchewan | N/A |
| Completed | Prehospital and Emergency Feasibility of MACOCHA Score Assessment to Predict Difficult Tracheal Intubation NCT03420027 | Centre Hospitalier Régional d'Orléans | — |
| Completed | Endobronchial Intubation of Double-lumen Tube: Conventional Method vs Fiberoptic Bronchoscope Guide Method NCT03368599 | Seoul National University Bundang Hospital | N/A |
| Completed | RAM Cannula VS Short Nasal Prongs for Delivering NIPPV in Preterm Infants NCT03081611 | Rambam Health Care Campus | N/A |
| Completed | Intubation Assist Clinical Study NCT03301324 | Zoll Medical Corporation | — |
| Completed | Impact of Tracheal Tube Fixing Site on Its Mobility During Head Mobilization NCT03116373 | University Hospital, Brest | N/A |
| Completed | Response to Endotracheal Tube Intubation at Different Time of Fentanyl Given During Induction NCT03728686 | Chien-Chung,Huang | N/A |
| Completed | Evaluation of the Ability to Diagnose the Position of the Intubation Probe Thanks to Lung Ultrasonography NCT02822846 | Assistance Publique - Hôpitaux de Paris | — |
| Completed | The Clarus Video System and Direct Laryngoscope for Rapid Sequence Induction Intubation With Cricoid Pressure NCT03841890 | Chang Gung Memorial Hospital | N/A |
| Unknown | Intubation Success Rate_Rigid Video Stylet Vs Video Laryngoscope NCT02769221 | Seoul National University Hospital | N/A |
| Completed | Modified Angled Tube vs. Conventional Angled Tube in Double-lumen Endotracheal Tube Intubation NCT02190032 | Samsung Medical Center | N/A |
| Completed | Chest Physiotherapy Technique Increasing Inspiratory Flow on Weaning From Non Invasive Ventilation NCT02041676 | Assistance Publique - Hôpitaux de Paris | N/A |
| Unknown | Learning Curve of Optiscope by Anesthesia Providers NCT01974505 | Jeju National University School of Medicine | N/A |
| Unknown | Effect-site Concentration of Remifentanil for Blunting Hemodynamic Responses to Double-lumen Endobronchial Int NCT02001285 | Jeju National University School of Medicine | N/A |
| Completed | Transesophageal Echocardiography(TEE) Probe Insertion and Tracheal Cuff Pressure NCT02034643 | Seoul National University Hospital | N/A |
| Completed | VivaSight Left-sided Double Lumen Tube Study NCT03665896 | Javier H Campos | N/A |
| Completed | The Effect Site Concentration of Remifentanil for Preventing QTc Interval Prolongation During Intubation in No NCT01880931 | Severance Hospital | N/A |
| Completed | Comparison of Miller's Blade and Airtraq Laryngoscope in Children NCT02423317 | Government Medical College, Haldwani | N/A |
| Completed | The Difficult Airway Management Trial: "The DIFFICAIR-Trial" NCT01718561 | Hillerod Hospital, Denmark | N/A |
| Completed | Influence of Tracheal-bronchial Anatomy Changes on Multi-detector Computed Tomography Scan of the Chest Upon P NCT03838653 | Javier H Campos | — |
| Unknown | Ultrasound Evaluation of Endotracheal Tube Depth NCT01649882 | Kai Schoenhage | N/A |
| Completed | Out-of-Hospital Randomized Comparison of Video-assisted Endotracheal Intubation NCT01635660 | University Hospital Schleswig-Holstein | N/A |
| Completed | Videolaryngoscope vs Classic Laryngoscope in Teaching Neonatal Endotracheal Intubation: a Randomized Controlle NCT01394783 | St. Justine's Hospital | Phase 4 |
| Completed | Verification of Endotracheal Tube Placement by Ultrasound in the Obese Patient NCT01227486 | Bispebjerg Hospital | — |
| Completed | Different Techniques for Emergency Cricothyroidotomy NCT01107561 | University of Alberta | N/A |
| Withdrawn | Head Movement Effect on Different Tracheal Tubes NCT00687583 | The Hospital for Sick Children | — |
| Withdrawn | Measurement Of Endotracheal Tube Cuff Pressure In Emergency Department Patients NCT01252173 | Beth Israel Medical Center | — |
| Completed | Indirect Laryngoscopy for Nasal Intubation NCT00910156 | General Hospital Linz | Phase 4 |