Observational studyCanadian journal of anaesthesia = Journal canadien d'anesthesie2025
First-pass success rate and predictive factors for stylet use in videolaryngoscopic intubations with a Macintosh blade: a prospective observational study.
Observational study in Canadian journal of anaesthesia = Journal canadien d'anesthesie, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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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.
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Who cites it
1 citing paper in PubMed.
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Authors and funding
6 authors.
Funding
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Abstract
purposeThe aim of this study was to evaluate the first-pass success rate of videolaryngoscopic intubations without a stylet using a Macintosh blade and to identify predictive factors for successful intubation.
methodsWe conducted a prospective observational study of 224 adult patients scheduled for elective videolaryngoscopic intubations using a Macintosh blade. We excluded patients who had cervical spine issues, airway disease, anticipated difficult intubation, or a body mass index > 35 kg·m
resultsThe first-pass success rate was 80% (180/224), increasing to 96% (215/224) after laryngeal manipulation on the second attempt. Nine patients (4%) required a stylet. Longer sternomental distance (odds ratio [OR], 1.24; 95% confidence interval [CI], 1.01 to 1.53; P = 0.04) and increased thyromental height (OR, 1.14; 95% confidence interval [CI], 1.07 to 1.21; P < 0.001) were associated with first-pass success without a stylet. Limited (OR, 0.39; 95% CI, 0.16 to 1.00; P = 0.049) or severely limited (OR, 0.05; 95% CI, 0.01 to 0.19; P < 0.001) cervical spine movement negatively affected success.
conclusionsRoutine stylet preparation for elective videolaryngoscopic intubations with a Macintosh blade may not be necessary, as only a small percentage of patients required it.
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