Trial reportBritish journal of anaesthesia2026
Preoxygenation with high-flow nasal oxygen at various flow rates in elective surgical patients: a prospective, randomised, single-blind clinical trial.
Trial report in British journal of anaesthesia, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT06736132 (Comparison of Different Oxygen Flow Rates During Preoxygenation Using High-Flow Nasal Oxygen), which is not on this map. Cited by 2 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.
Comparison of Different Oxygen Flow Rates During Preoxygenation Using High-Flow Nasal Oxygen
Who cites it
2 citing papers in PubMed.
- Personalizing Peri-Intubation Oxygenation in Patients at Risk of Acute Hypoxemic Respiratory Failure: A Phenotype-Driven Narrative Review of High-Flow Nasal Oxygen and Non-Invasive Ventilation.Journal of personalized medicine · 2026Review
- High-flow nasal oxygen in the perioperative period: Enough evidence, or questions still unanswered?Indian journal of anaesthesia · 2026Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundHigh-flow nasal oxygen (HFNO) is increasingly used for preoxygenation. Previous studies of preoxygenation have explored flow rates below 60 L min
methodsThis randomised trial included patients aged 18-84 yr of ASA physical status 1-3 scheduled for elective surgery. Preoxygenation was conducted using HFNO at randomised flow rates of 45, 70, or 95 L min
resultsOf 72 participants included in the final analysis, baseline characteristics were similar and the mean duration of preoxygenation was 250 s in all three groups. Apnoea times did not differ, with median durations of 472, 523, and 483 s for 45, 70, and 95 L min
conclusionsThere was no difference in the safe apnoea time between preoxygenation with the three flow rates. As 45 L min CLINICAL
trial registrationNCT06736132.
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Registered trials
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