Trial reportBritish journal of anaesthesia2016
Effects of using the simplified airway risk index vs usual airway assessment on unanticipated difficult tracheal intubation - a cluster randomized trial with 64,273 participants.
Trial report in British journal of anaesthesia, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT01718561 (Incidence of Unanticipated Difficult Airway Using an Objective Airway Score Versus a Standard Clinical Airway Assessment, The DIFFICAIR Trial - A Cluster-randomized Clinical Trial on 28 Anaesthesia Departments With 70,000 Patients Registered in the Danish Anaesthesia Database), which is not on this map. Cited by 28 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.
Incidence of Unanticipated Difficult Airway Using an Objective Airway Score Versus a Standard Clinical Airway Assessment, The DIFFICAIR Trial - A Cluster-randomized Clinical Trial on 28 Anaesthesia Departments With 70,000 Patients Registered in the Danish Anaesthesia Database
Who cites it
28 citing papers in PubMed, 2 syntheses or guidelines pooled it, 75 citations in OpenAlex.
- Non-invasive ventilation for preoxygenation before general anesthesia: a systematic review and meta-analysis of randomized controlled trials.BMC anesthesiology · 2022Pooled it
- Avoidance versus use of neuromuscular blocking agents for improving conditions during tracheal intubation or direct laryngoscopy in adults and adolescents.The Cochrane database of systematic reviews · 2017Pooled it
- Thyromental height test as a new method for prediction of difficult intubation with double lumen tube.PloS one · 2018Trial
- Inter-Rater Reliability in Pre-Anaesthetic Airway Assessment: A Protocol for a Systematic Review.Acta anaesthesiologica Scandinavica · 2026Article
- Prognostic Factors for Postoperative Complications. An Aggregate Protocol for 10 Observational Studies From the Danish TRIPLE-A Cohort of 1.2 Million Surgeries.Acta anaesthesiologica Scandinavica · 2026Article
- Airway coach project: development of a machine learning-based model using clinical and ultrasound parameters to support videolaryngoscopy strategy.BMC anesthesiology · 2026Observational
- Article
- Difficult airway management in adults: Insights from an observational cohort study on the use of videolaryngoscopy and fiberoptic bronchoscopy in a direct laryngoscopy-based practice.Journal of anesthesia, analgesia and critical care · 2025Article
- Article
- Unravelling intubation challenges: a machine learning approach incorporating multiple predictive parameters.BMC anesthesiology · 2024Article
- The best visible Mallampati score-too good to be true?Canadian journal of anaesthesia = Journal canadien d'anesthesie · 2024Article
- Machine Learning Predictions and Identifying Key Predictors for Safer Intubation: A Study on Video Laryngoscopy Views.Journal of personalized medicine · 2024Article
- Airway Triage: Goodbye, difficult airway!Indian journal of anaesthesia · 2024Article
- A review of the current status and progress in difficult airway assessment research.European journal of medical research · 2024Review
- Clinically Preferred Videolaryngoscopes in Airway Management: An Updated Systematic Review.Healthcare (Basel, Switzerland) · 2023Review
- Glidescope Video Laryngoscopy in Patients with Severely Restricted Mouth Opening-A Pilot Study.Journal of clinical medicine · 2023Article
- A fully-automatic semi-supervised deep learning model for difficult airway assessment.Heliyon · 2023Article
- Necessity and Importance of Developing AI in Anesthesia from the Perspective of Clinical Safety and Information Security.Medical science monitor : international medical journal of experimental and clinical research · 2023Review
- Elective Tracheal Intubation With the VieScope-A Prospective Randomized Non-inferiority Pilot Study (VieScOP-Trial).Frontiers in medicine · 2022Article
- Identification of difficult to intubate patients from frontal face images using an ensemble of deep learning models.Computers in biology and medicine · 2021Article
Corrections and comments
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Authors and funding
29 authors at 11 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundUnanticipated difficult intubation remains a challenge in anaesthesia. The Simplified Airway Risk Index (SARI) is a multivariable risk model consisting of seven independent risk factors for difficult intubation. Our aim was to compare preoperative airway assessment based on the SARI with usual airway assessment.
methodsFrom 01.10.2012 to 31.12.2013, 28 departments were cluster-randomized to apply the SARI model or usual airway assessment. The SARI group implemented the SARI model. The Non-SARI group continued usual airway assessment, thus reflecting a group of anaesthetists' heterogeneous individual airway assessments. Preoperative prediction of difficult intubation and actual intubation difficulties were registered in the Danish Anaesthesia Database for both groups. Patients who were preoperatively scheduled for intubation by advanced techniques (e.g. video laryngoscopy; flexible optic scope) were excluded from the primary analysis. Primary outcomes were the proportions of unanticipated difficult and unanticipated easy intubation.
resultsA total of 26 departments (15 SARI and 11 Non-SARI) and 64 273 participants were included. In the primary analyses 29 209 SARI and 30 305 Non-SARI participants were included.In SARI departments 2.4% (696) of the participants had an unanticipated difficult intubation vs 2.4% (723) in Non-SARI departments. Odds ratio (OR) adjusted for design variables was 1.03 (95% CI: 0.77-1.38). The proportion of unanticipated easy intubation was 1.42% (415) in SARI departments vs 1.00% (302) in Non-SARI departments. Adjusted OR was 1.26 (0.68-2.34).
conclusionsUsing the SARI compared with usual airway assessment we detected no statistical significant changes in unanticipated difficult- or easy intubations. CLINICAL
trial registrationNCT01718561.
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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.