Trial reportBMC anesthesiology2020
Comparison of C-MAC D-blade videolaryngoscope and McCoy laryngoscope efficacy for nasotracheal intubation in simulated cervical spinal injury: a prospective randomized comparative study.
Trial report in BMC anesthesiology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 2 of them syntheses 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.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
16 citing papers in PubMed, 2 syntheses or guidelines pooled it, 31 citations in OpenAlex.
- Effectiveness of indirect versus direct laryngoscopes for nasotracheal intubation in adults undergoing elective surgery: a systematic review and network meta-analysis.Canadian journal of anaesthesia = Journal canadien d'anesthesie · 2026Pooled it
- Video laryngoscopy vs. direct laryngoscopy for nasotracheal intubation in oromaxillofacial surgery: a systematic review and meta-analysis of randomized controlled trials.Korean journal of anesthesiology · 2021Pooled it
- A randomized controlled trail comparing the visual stylet and visual laryngoscope for transoral single lumen tracheal intubation.Scientific reports · 2025Trial
- A Comparison of the Effectiveness of the McCoy Laryngoscope and the C-MAC D-Blade Video Laryngoscope in Obese Patients.Medicina (Kaunas, Lithuania) · 2024Trial
- A comparative evaluation of fibreoptic bronchoscopy versus C-MACCanadian journal of anaesthesia = Journal canadien d'anesthesie · 2024Trial
- Cervical spine immobilization does not interfere with nasotracheal intubation performed using GlideScope videolaryngoscopy: a randomized equivalence trial.Scientific reports · 2022Trial
- Article
- Comparison between C-MAC D-blade video laryngoscope and McCoy laryngoscope for nasotracheal intubation in traumatic cervical spine surgery - A randomised controlled trial.Indian journal of anaesthesia · 2023Article
- Intubation characteristics using modified USB videolaryngoscope: A prospective, randomised study.Indian journal of anaesthesia · 2023Article
- The Use of the Shikani Video-Assisted Intubating Stylet Technique in Patients with Restricted Neck Mobility.Healthcare (Basel, Switzerland) · 2022Article
- The levering video laryngoscope: An affordable alternative for difficult airway management.Indian journal of anaesthesia · 2022Article
- A Comparison of McGrath Videolaryngoscope versus Macintosh Laryngoscope for Nasotracheal Intubation: A Systematic Review and Meta-Analysis.Journal of clinical medicine · 2022Review
- Split Type Postman videolaryngoscope: The newer device versus the standard Macintosh laryngoscope in simulated difficult airway - A new hope for difficult intubation scenarios.Indian journal of anaesthesia · 2022Article
- Comparisons of Videolaryngoscopes for Intubation Undergoing General Anesthesia: Systematic Review and Network Meta-Analysis of Randomized Controlled Trials.Journal of personalized medicine · 2022Review
- Comparison of McCoy, Macintosh, and Truview laryngoscope for bougie-aided naso-tracheal intubation: A randomized controlled study.International journal of critical illness and injury scienceArticle
- A comparative study of the C-MAC D-blade videolaryngoscope and McCoy laryngoscope for oro-tracheal intubation with manual in-line stabilization of neck in patients undergoing cervical spine surgery.Journal of anaesthesiology, clinical pharmacologyArticle
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundImmobilization with cervical spine worsens endotracheal intubation condition. Though various intubation devices have been demonstrated to perform well in oral endotracheal intubation, limited information is available concerning nasotracheal intubation (NTI) in patients with cervical spine immobilization. The present study compared the performance of the C-MAC D-Blade videolaryngoscope with the McCoy laryngoscope for NTI in patients with simulated cervical spine injuries.
methodsThis was a prospective, randomized, controlled, study done in a tertiary hospital. Ninety-five patients requiring NTI were included in data analysis: McCoy group (group M, n = 47) or C-MAC D-Blade videolaryngoscope group (group C, n = 48). A Philadelphia neck collar was applied before anesthetic induction to immobilize the cervical spine. Single experienced anesthesiologist performed NTI. The primary outcome was duration of intubation divided by three steps: nose to oropharynx; oropharynx into glottic inlet; and glottic inlet to trachea. Secondary outcomes included glottic view as percentage of glottis opening (POGO) score and Cormack-Lehance (CL) grade, modified nasal intubation-difficulty scale (NIDS) rating, hemodynamic changes before and after intubation, and complications.
resultsTotal intubation duration was significantly shorter in group C (39.5 ± 11.4 s) compared to group M (48.1 ± 13.9 s). Group C required significantly less time for glottic visualization and endotracheal tube placement in the trachea. More patients in group C had CL grade I and higher POGO scores (P < 0.001, for both measures). No difficulty in NTI (modified NIDS = 0) was more in group C than group M. Hemodynamic changes and incidence of complications were comparable between groups.
conclusionThe C-MAC D-Blade videolaryngoscope is an effective tool for NTI in a simulated difficult airway, which improves glottic visualization and shortens intubation time relative to those with McCoy laryngoscope.
trial registrationClinical Research Information Service of the Korea National Institute of Health, Identification number: KCT 0004535, Registered December 10, 2019, Retrospectively registered, http://cris.nih.go.kr.
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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.