| Completed | Evaluation of Double Lumen Tube Intubation Difficulty With Photo-Based Artificial Intelligence Algorithms NCT06839261 | Ankara Ataturk Sanatorium Training and Research Hospital | — |
| Completed | Initiation of Airway Code: the Role of the Airway Team in Unexpected Difficult Airways NCT06448377 | Kocaeli City Hospital | — |
| Unknown | Video Stylet vs. Flexible Bronchoscopy for C-Spine NCT03992092 | London Health Sciences Centre Research Institute OR Lawson Research Institute of St. Joseph's | N/A |
| Completed | Pediatric Videolaryngoscopic Intubation and Difficult Airway Classification NCT04844723 | Universitätsklinikum Hamburg-Eppendorf | — |
| Completed | Comparison of Direct and Video Laryngoscope During Endotracheal Intubation in Sellick and Trendelenburg Positi NCT04457453 | Ajou University School of Medicine | N/A |
| Unknown | Sniper Intubation for Training of Undergraduate Medical Student NCT04770077 | Ain Shams University | — |
| Completed | Awake Nasal Fiber-optic Intubation of Severely Obese Patients in Lateral Position NCT04779528 | University of Jordan | N/A |
| Completed | GlideScope Videolaryngoscopy in Patients With Reduced Mouth Opening NCT04174833 | Universitätsklinikum Hamburg-Eppendorf | — |
| Completed | Effect of Back up Head Elevated Position on Laryngeal Visualization. NCT04716218 | Hallym University Kangnam Sacred Heart Hospital | N/A |
| Completed | Optimal Intubating Technique Using Videolaryngoscopy in Patients With Semi-rigid Neck Collar NCT04578119 | Gangnam Severance Hospital | N/A |
| Completed | Orotracheal Intubation Using Flexible Fibro Bronchoscope With vs Without Supraglottic Device NCT04356547 | Universidad de Antioquia | N/A |
| Completed | McGRATH vs Macintosh Laryngoscopy Comparison in LMA Insertion NCT04509453 | Udayana University | N/A |
| Completed | Learning Curve of Fiberoptic Intubation Through Supraglottic Airway Device NCT04482166 | Seoul National University Hospital | N/A |
| Completed | Comparison of Two Bending Angles for Nasotracheal Intubation With a Malleable Vedio Stylet NCT04459481 | Chinese Academy of Medical Sciences | N/A |
| Unknown | Effect of LPEC Compared With a Sham Procedure in the General Anesthesia NCT04438772 | University of Liege | N/A |
| Completed | Face-to-face Intubation in Morbidly Obese NCT04959149 | Medical University of Lodz | N/A |
| Withdrawn | Assessment of Post-operative Sore Throat After Scheduled General Anesthesia NCT04115865 | University Hospital, Lille | — |
| Completed | Comparison of Different Video Laryngoscopes in < 1 Year Old Undergoing Neurosurgical Operations: a Prospective NCT04153357 | Kocaeli University | N/A |
| Completed | Patient Experience Following Awake Fibreoptic Intubation Compared to Asleep Fibreoptic Intubation NCT04091568 | University Hospitals Coventry and Warwickshire NHS Trust | — |
| Completed | TMHT - Difficult Intubation Prediction Using Double Lumen Video Tubes NCT04101734 | Medical University of Silesia | — |
| Completed | Red-Rubber Catheter to Facilitate Nasotracheal Intubation in Adult Patients NCT03779984 | University of Texas Southwestern Medical Center | N/A |
| Completed | Comparison of Fiberoptic Bronchoscopic Intubation Between Silicone and Polyvinylchloride Double Lumen Tube. NCT03889847 | Ajou University School of Medicine | N/A |
| Unknown | TCHCCT-Zhong-Xing-Emergency-Department-airway-clincal (TTC) NCT03808896 | Taipei City Hospital | N/A |
| Completed | Awake Intubation V-MAC VS NCT03742830 | Insel Gruppe AG, University Hospital Bern | — |
| Completed | Pre-Operative Airway Assessment of Patients With Morbid Obesity NCT04542187 | Bagcilar Training and Research Hospital | — |
| Completed | Comparison of Two Blades of Videolaryngoscope in Simulated Difficult Airway in Children NCT03719638 | Kocaeli University | N/A |
| Completed | Evaluation of Prophylactic Endotracheal Intubation NCT03716466 | University of Texas Southwestern Medical Center | — |
| Completed | Preoxygenation for Difficult Airway Management NCT03604120 | Nantes University Hospital | N/A |
| Completed | Long Endotracheal Tube vs. Aintree Intubating Catheter for Fiberoptic-guided Intubation in Manikin NCT03645174 | Ajou University School of Medicine | N/A |
| Completed | Duble Lumen Intubation NCT03624439 | Lazarski University | N/A |
| Completed | Airtraq Versus Fiberoptic for Awake Tracheal Intubation NCT03539185 | University Hospital, Caen | N/A |
| Unknown | C-MAC Videolaryngoscope Intubation and Cervical Spine Motion NCT03567902 | Seoul National University Hospital | N/A |
| Unknown | Comparison of Lighted Stylet and GlideScope for Double-lumen Endobronchial Intubation NCT03514745 | SMG-SNU Boramae Medical Center | N/A |
| Completed | Emergency Front of the NecK Access (eFONA) in Children NCT03576352 | Insel Gruppe AG, University Hospital Bern | N/A |
| Completed | Evaluation of Laryngeal Morbidity After Orotracheal Intubation by Vocal Analysis and Laryngostroboscopy NCT03501095 | Azienda Ospedaliero Universitaria Maggiore della Carita | — |
| Unknown | Comparison of Endotracheal Intubation Over the Aintree With Fiberoptic Bronchoskop Via the I-gel and LMA Prote NCT03501602 | Kocaeli Derince Education and Research Hospital | N/A |
| Completed | Comparison of Two Different Videolaryngoscopes Regarding Hemodynamic Parameters in Open Heart Surgey NCT03483285 | Kocaeli University | N/A |
| Unknown | Modified Mallampati Scoring Technique for Airway Assessment NCT03443947 | AlRefaey Kandeel | N/A |
| Completed | Glottic View in Infants With a Shoulder Roll NCT03424070 | State University of New York at Buffalo | N/A |
| Completed | Fiberoptic Bronchoscope of Double Lumen Tube and Single Lumen Tube in Patients With Semi-regid Neck Collar. NCT03392766 | Ajou University School of Medicine | N/A |
| Completed | Tracheal Intubation Coaching in NICUs NCT03194503 | Children's Hospital of Philadelphia | N/A |
| Completed | Effect of Head Tilting During Nasotracheal Intubation NCT03377114 | Seoul National University Hospital | N/A |
| Unknown | TCHCCT-Zhong-Xing-Emergency-Department-airway NCT03366311 | Taipei City Hospital | N/A |
| Completed | A Comparison of McGrath MAC®, Pentax-AWS® and Macintosh Direct Laryngoscopes for Nasotracheal Intubation NCT03337555 | Ajou University School of Medicine | N/A |
| Terminated | Novel Airway Device to Aid Endotracheal Intubations NCT03340207 | University at Buffalo | N/A |
| Completed | Predictive Parameters for Difficult Tracheal Intubation Identification in Thyroid Surgery NCT03578601 | University of Padova | — |
| Completed | Mallampati Classification vs Best Visible Mallampati for Prediction of Difficult Tracheal Intubation NCT02788253 | University Hospital, Caen | — |
| Completed | Insertion Time Over Fiberoptic Bronchoscope of Double Lumen Tube and Single Lumen Tube NCT03173443 | Ajou University School of Medicine | N/A |
| Completed | Pentax Videolaryngoscopy in Children NCT03118622 | Ajou University School of Medicine | — |
| Completed | Video-Laryngoscope Alone or With Bronchoscope for Predicted Difficult Intubation NCT03080896 | University of Louisville | N/A |
| Completed | Videolaryngoscopy for Intubation in Patients With Diabetes NCT03089528 | Diskapi Teaching and Research Hospital | N/A |
| Completed | Tracheal Intubation With the Rigid Tube for Laryngoscopy- a New Method NCT03341507 | Iuliu Hatieganu University of Medicine and Pharmacy | N/A |
| Completed | Bougie Assisted Endotracheal Intubation in Air-Q Intubating Laryngeal Mask And Fastrach Intubating Laryngeal M NCT03929445 | Suez Canal University | N/A |
| Unknown | Comparison of the Vividtrac™ and Other Videolaryngoscopes in Clinical Practice NCT03271008 | University of Pecs | N/A |
| Completed | A Comparison of Videolaryngoscope and Direct Laryngoscope in IOP Changes, Throat Pain, IT and Hemodynamic Vari NCT03279172 | Diskapi Teaching and Research Hospital | N/A |
| Unknown | Airway Code Calls - Survey of Management NCT03035786 | Singapore General Hospital | — |
| Completed | Identification of Morphological Characteristics to Predict Difficult Endotracheal Intubation Using a Flexible NCT02769819 | Centre hospitalier de l'Université de Montréal (CHUM) | N/A |
| Unknown | Comparison of iLTS-D® and ILMA® for Intubation With Fiberoptic Control NCT02922595 | Patrick Schoettker,MD PD | N/A |
| Unknown | A Comparison Between the Intubating Laryngeal Tube Suction and the Ambu AuraGain NCT02878005 | Bnai Zion Medical Center | N/A |
| Completed | The Difficult Airway NCT03671824 | University of Texas Southwestern Medical Center | — |
| Unknown | Laryngoscope-assisted Lightwand Intubation and Cervical Spine Motion NCT02430415 | Seoul National University Hospital | N/A |
| Unknown | Comparison of Various Supraglottic Airway Devices for Fiberoptical Guided Tracheal Intubation NCT02501577 | University of Regensburg | N/A |
| Completed | Head Motion in Pediatric Patients Endotracheally Intubated With Video Laryngoscopy Versus Direct Laryngoscopy NCT02405390 | Nicklaus Children's Hospital f/k/a Miami Children's Hospital | N/A |
| Completed | Comparison of McGrath Series 5 and Airtraq Videolaryngoscope for Double-lumen Tube (DLT) Intubation NCT02329041 | Huazhong University of Science and Technology | N/A |
| Completed | "Neutral Head Position" and "Head-lift Position" for Orotracheal Intubation With "Trachway" Intubating Stylet NCT02578992 | Tri-Service General Hospital | N/A |
| Completed | Intubation of a Pediatric Manikin in Difficult Airway by Novice Personnel: A Comparison of Glidescope and Airt NCT02290249 | Kocaeli University | Phase 4 |
| Completed | Face-to-face Tracheal Intubation: a Comparison of Airtraq, Glidescope and Fastrach NCT02286570 | Kocaeli University | Phase 4 |
| Completed | McGRATH MAC Video Laryngoscope NCT02250521 | The University of Texas Health Science Center, Houston | N/A |
| Completed | Comparison of McGrath and Macintosh Laryngoscope for DLT Intubation NCT02190201 | Huazhong University of Science and Technology | Phase 4 |
| Completed | Comparison of Intubation Success Rates of 3 Different Laryngoscope Blade Types in Morbidly Obese Patients NCT04477148 | Turkish Society of Anesthesiology and Reanimation | N/A |
| Completed | Effectiveness of Preoxygenation With Positive Airway Pressure: a Comparison of the Supine and 25° Head up Posi NCT03861949 | B.P. Koirala Institute of Health Sciences | N/A |
| Completed | I-gel Versus Classic-Laryngeal Mask Airway (C-LMA) as a Conduit for Tracheal Intubation Using Ventilating Boug NCT02566135 | Medical College Baroda | N/A |
| Completed | Comparison of Three Laryngoscopes in Difficult Laryngoscopy NCT02387502 | Government Medical College, Haldwani | N/A |
| Completed | If Different Types of Periampullary Diverticula Affect ERCP Cannulation? NCT03556072 | Hepatopancreatobiliary Surgery Institute of Gansu Province | — |
| Completed | MACOCHA Score Predicts Intubation Failure NCT02326896 | Heinrich-Heine University, Duesseldorf | — |
| Completed | McGrath Series 5 Videolaryngoscope for Double-lumen Tube Intubation NCT01984970 | Huazhong University of Science and Technology | — |
| Completed | Study of Interest on Cervical Ultrasound Exploration for Association With Difficult Intubation NCT02362568 | Centre Hospitalier Universitaire de Besancon | N/A |
| Completed | The Effects of Flexible Intubating Stylet in the Accurate Placement of Double-lumen Endobronchial Tube NCT02364622 | Kaohsiung Medical University Chung-Ho Memorial Hospital | N/A |
| Completed | Evaluation of McGrath® MAC Video Laryngoscope NCT02051400 | Hanyang University | N/A |
| Completed | Head Position for Endotracheal Intubation NCT02418741 | National Medical Center, Seoul | N/A |
| Completed | Comparison of Airway Intubation Devices When Using a Biohazard Suit NCT01924559 | Lehigh Valley Hospital | N/A |
| Completed | A Comparison Between Two Video Laryngoscopes,in Successfully Intubating Pediatric Mannequins w/wo Difficult Ai NCT02198742 | Baylor College of Medicine | Phase 1 |
| Completed | Evaluation of Video Laryngoscopes in Difficult Airway NCT01692535 | Insel Gruppe AG, University Hospital Bern | N/A |
| Unknown | Video-stylet for Nasotracheal Intubation NCT01917409 | Kaohsiung Medical University Chung-Ho Memorial Hospital | N/A |
| Completed | Investigation of the Effectiveness of Sevoflurane Anaesthesia in Difficult to Intubate Egyptian Patients NCT01749631 | AbbVie (prior sponsor, Abbott) | — |
| Completed | Comparison of the Laryngeal Mask Ambu Aura-i Versus AirQ in Children NCT01692522 | Insel Gruppe AG, University Hospital Bern | N/A |
| Completed | RIFL (Rigid and Flexing Laryngoscope) vs. Fiberoptic Bronchoscope NCT01965938 | Vanderbilt University | N/A |
| Completed | Combined Technique for Difficult Intubation NCT01691703 | Catharina Ziekenhuis Eindhoven | N/A |
| Completed | Sedation Effect of Dexmedetomidine Versus Remifentanil to Fibreoptic Intubation NCT01474213 | Shanghai Ninth People's Hospital Affiliated to Shanghai Jiao Tong University | Phase 4 |
| Completed | Comparison of Intubation Rate of Macintosh Size 2 and 3 Blades in Asian Female: a Randomised Controlled Trial NCT04566224 | Mackay Memorial Hospital | N/A |
| Completed | Nasogastric Tube Insertion Using Midazolam in the Emergency Department NCT01375634 | University of Vermont | Phase 4 |
| Completed | Intubation Time With Low Dose Rocuronium NCT01464489 | Gachon University Gil Medical Center | N/A |
| Completed | GlideScope®Video Laryngoscope for Difficult Intubation: Implication of the Size of Blade NCT01616771 | Seoul National University Hospital | N/A |
| Terminated | Using Lignocaine Spray and Gel to Reduce the Pain Associated With Nasogastric Tube Insertion in Children NCT01075789 | The University of Queensland | N/A |
| Recruiting | Improving Safety and Quality of Tracheal Intubation Practice in Pediatric ICUs NCT02493478 | Children's Hospital of Philadelphia | — |
| Completed | Initial Experience With Storz C-MAC Video Intubation System NCT01104090 | The University of Texas Health Science Center, Houston | N/A |
| Completed | Miller Straight Blade vs Macintosh Blade NCT02664532 | Tata Main Hospital | N/A |
| Completed | Videolaryngoscopy in Patients With Cervical Spine Immobilisation NCT02563301 | NHS Tayside | N/A |
| Completed | Nasotracheal Intubation Using Shikani Optical Stylet NCT00963677 | Central South University | N/A |
| Terminated | Use of Dexmedetomidine to Facilitate Extubation in Surgical ICU Patients Who Failed Previous Weaning Attempts NCT00464490 | University of California, San Francisco | N/A |
| Completed | Ketamine Versus Etomidate During Rapid Sequence Intubation: Consequences on Hospital Morbidity NCT00440102 | Assistance Publique - Hôpitaux de Paris | Phase 4 |