Trial reportBMC anesthesiology2019
Intubation of non-difficult airways using video laryngoscope versus direct laryngoscope: a randomized, parallel-group study.
Trial report in BMC anesthesiology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05545982 (Comparison of Video Laryngoscope Using Miller or Macintosh Approach During Endotracheal Intubation), which is not on this map. Cited by 21 papers, 1 of them a synthesis that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Comparison of Video Laryngoscope Using Miller or Macintosh Approach During Endotracheal Intubation
Who cites it
21 citing papers in PubMed, 1 synthesis or guideline pooled it, 46 citations in OpenAlex.
- Videolaryngoscopy versus direct laryngoscopy for adults undergoing tracheal intubation.The Cochrane database of systematic reviews · 2022Pooled it
- Hyper-angulated (Glidescope) versus intermediate-angled (UED-A) videolaryngoscopy for routine tracheal intubation in adults: a prospective randomized controlled trial.Scientific reports · 2026Trial
- Comparison between the standard method and the 30° curved tongue depressor-aided technique for insertion of a laryngeal mask airway: a randomized controlled trial.BMC anesthesiology · 2024Trial
- Individualized rotation of left double lumen endobronchial tube to improve placement success rate: a randomized controlled trial.Respiratory research · 2024Trial
- Conventional versus video-assisted laryngoscopy for perioperative endotracheal intubation (COVALENT) - a randomized, controlled multicenter trial.BMC anesthesiology · 2023Trial
- Impact of VieScope® on first-attempt success during simulated COVID-19 patients intubation: A randomized cross-over simulation trial.Ulusal travma ve acil cerrahi dergisi = Turkish journal of trauma & emergency surgery : TJTES · 2023Trial
- Flexible Bronchoscope versus Video Laryngoscope for Orotracheal Intubation During Upper Gastrointestinal Endoscopic Surgery in Left Lateral Position: A Randomized Controlled Trial.International journal of general medicine · 2022Trial
- Barrier Enclosure for Endotracheal Intubation in a Simulated COVID-19 Scenario: A Crossover Study.The western journal of emergency medicine · 2020Trial
- Prevalence and bedside predictors of difficult direct laryngoscopy among 3,080 adult elective surgical patients at a Cambodian tertiary center: a retrospective cohort study.BMC anesthesiology · 2026Article
- Article
- Intraoperative Nerve Monitoring in Thyroid Surgery: A Comprehensive Review of Technical Principles, Anesthetic Considerations, and Clinical Applications.Journal of clinical medicine · 2025Review
- Risk Factors of Difficult Intubation in Patients with Severe Obesity Undergoing Bariatric Surgery: A Retrospective Cohort Study.Obesity surgery · 2025Article
- Airway management for patients who underwent appendectomy for the indication of acute appendicitis at a Texas tertiary care center: a single center retrospective study.Proceedings (Baylor University. Medical Center) · 2025Article
- Article
- Comparison of the Effectiveness of the Miller Laryngoscope and the McGrath-MAC Video Laryngoscope in Direct Visualization of the Glottic Opening.Medicina (Kaunas, Lithuania) · 2023Article
- A Comparison of the Effectiveness of Videolaryngoscopy and Macintosh Laryngoscopy in Intubation Attempts on Adult Patients.Turkish journal of anaesthesiology and reanimation · 2022Article
- Article
- The effect of topical airway anesthesia on hemodynamic profiles during the induction period in patients undergoing cardiac surgery: Study protocol for a randomized controlled trial.Frontiers in cardiovascular medicine · 2022Article
- Direct Versus Video Laryngoscopy in Emergency Intubation: A Randomized Control Trial Study.Bulletin of emergency and trauma · 2021Article
- An initial learning experience of tracheal intubation with video laryngoscope: Experiences from a novice PGY.Medicine · 2021Observational
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
7 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundThe video laryngoscope is recommended for intubating difficult airways. The present study aimed to determine whether the video laryngoscope can further improve intubation success rates compared with the direct laryngoscope in patients with non-difficult airways.
methodsIn total, 360 patients scheduled for elective abdominal surgeries were randomly assigned to undergo intubation using either a video laryngoscope (n = 179) or a direct laryngoscope (n = 181). The following parameters were measured: mouth opening; thyromental distance; sternomental distance; shape angle of the tracheal catheter; and glottic exposure grade.
resultsThe percentage of patients with level I-II of total glottic exposure in the video laryngoscope group was 100% versus 63.5% in the direct laryngoscope group (P < 0.001). The one-attempt success rate of intubation was 96.1% using a video laryngoscope versus 90.1% using a direct laryngoscope (P = 0.024). The intubation success rate using a video laryngoscope was 100% versus 94.5% using a direct laryngoscope (P = 0.004). Immediate oropharyngeal injury occurred in 5.1% of patients intubated using a direct laryngoscope versus 1.1% using a video laryngoscope (P = 0.033). On postoperative day 1, obvious hoarseness was exhibited by 7.9% of patients intubated using a direct laryngoscope versus 2.8% using a video laryngoscope (P = 0.035). The grade of glottic exposure and catheter shape angle were independent risk factors for tracheal intubation failure. Thyromental distance, shape angle, glottic exposure time, and surgical position were independent risk factors for postoperative complications. Thyromental distance and glottic exposure time were independent risk factors for complications lasting > 2 days.
conclusionsIntubation using a video laryngoscope yielded significantly higher intubation success rates and significantly fewer postoperative complications than direct laryngoscopy in patients with non-difficult airways.
trial registrationChinese Clinical Trial Registry. No: ChiCTR-IOR-16009023 . Prospective registration.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.