ArticleCanadian journal of anaesthesia = Journal canadien d'anesthesie2020
Direct versus indirect laryngoscopy using a Macintosh video laryngoscope: a mannequin study comparing applied forces.
Article in Canadian journal of anaesthesia = Journal canadien d'anesthesie, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 3 registered trials, which are not on this map. Cited by 16 papers.
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.
Applied Forces During Neonatal Intubation: a Randomized Crossover Mannequin Study
Applied Forces During Neonatal Intubation With Direct and Video Laryngoscopy at Different Heights of the Resuscitation Table: a Randomized Crossover Manikin Study
Applied Forces During Neonatal Ventilation With Different Face Masks: a Randomized Crossover Manikin Study.
Who cites it
16 citing papers in PubMed, 25 citations in OpenAlex.
- Applied forces with partially vs. fully inflated face masks during neonatal ventilation: a randomized crossover manikin trial.Pediatric research · 2026Trial
- The C-MAC video laryngoscope helps presbyopic anesthetists to overcome difficulty in neonatal and infantile intubation: a randomized controlled trial.BMC anesthesiology · 2025Trial
- Applied forces with high vs. low resuscitation table during neonatal ventilation: a randomized crossover manikin study.European journal of pediatrics · 2024Trial
- Trial
- Applied forces with direct versus indirect laryngoscopy in neonatal intubation: a randomized crossover mannequin study.Canadian journal of anaesthesia = Journal canadien d'anesthesie · 2023Trial
- Applied forces during neonatal intubation with direct and video laryngoscopy at different bed elevations: a randomized crossover manikin study.European journal of pediatrics · 2025Article
- Comparison of forces applied to oropharyngeal tissues with different blades during laryngoscopy in a standard pediatric endotracheal intubation model.Saudi medical journal · 2025Article
- Novel flangeless video laryngoscope for limited mouth opening.World journal of critical care medicine · 2025Article
- Postoperative exacerbated cough hypersensitivity syndrome induces dramatic respiratory alkalosis, lactatemia, and electrolyte imbalance.BMC anesthesiology · 2024Article
- Comparison of Force Distribution during Laryngoscopy with the C-MAC D-BLADE and Macintosh-Style Blades: A Randomised Controlled Clinical Trial.Journal of clinical medicine · 2024Article
- Neonatal intubation: what are we doing?European journal of pediatrics · 2024Article
- Quantifying Intubation Forces on Incisors and Tongue Base Across Exposure Difficulty and Experience in a Simulator.Cureus · 2023Article
- Optimal depth of electromyographic endotracheal tube: A novel approach using video laryngoscopy.Journal of the Chinese Medical Association : JCMA · 2022Article
- Direct vs. Video-Laryngoscopy for Intubation by Paramedics of Simulated COVID-19 Patients under Cardiopulmonary Resuscitation: A Randomized Crossover Trial.Journal of clinical medicine · 2021Article
- A comparative study of glottis visualization according to the method of lifting the epiglottis in video laryngoscopy: indirect and direct lifting methods.Anesthesia and pain medicine · 2021Article
- Role of videolaryngoscope in the management of difficult airway in adults: A survey.Indian journal of anaesthesia · 2020Article
Corrections and comments
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Authors and funding
5 authors at 2 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeUpper airway injury and sympathetic activation may be related to the forces applied during laryngoscopy. We compared the applied forces during laryngoscopy using direct and indirect visualization of a standardized mannequin glottis.
methodsForce transducers were applied to the concave surface of a GlideScope T-MAC Macintosh-style video laryngoscope that can also be used as a conventional direct-view laryngoscope. Thirty-four anesthesiologists performed four laryngoscopies (two direct and two indirect views) on an Ambu mannequin in a randomized sequence. During each laryngoscopy, participants were instructed to obtain views corresponding to > 80% and 50% of the glottic opening aperture. Peak and impulse forces were measured for each view.
resultsTo achieve a 50% glottic opening view, the top 10
conclusionsIn this mannequin study, lower forces applied during indirect vs direct laryngoscopy may reflect an advantage of video laryngoscopy, but additional studies using patients are required to confirm the clinical implications of these findings.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
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.