Evidence map›Paper›PMID 40679126›Full record

Trial reportPaediatric anaesthesia2026

Lung Volume Change Under Apnoeic Oxygenation With Different Flow Rates in Children: A Single-Centre Prospective Randomized Controlled Non-Inferiority Trial.

Jonas Aebli, Vera Bohnenblust, Gabriela Koepp-Medina, Sara Ahsani-Nasab, Markus Huber, Robert Greif, Nicola Disma, Thomas Riva, Thomas Riedel, Alexander Fuchs

Abstract readEquivalence TrialRandomized Controlled Trial
In one paragraph

Trial report in Paediatric anaesthesia, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

3 citing papers in PubMed.

  1. Trial
  2. Review
  3. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors.

Jonas AebliDepartment of Anesthesiology and Pain Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.
Vera BohnenblustDepartment of Anesthesiology and Pain Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.
Gabriela Koepp-MedinaDepartment of Anesthesiology and Pain Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.
Sara Ahsani-NasabDepartment of Anesthesiology and Pain Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.
Markus HuberDepartment of Anesthesiology and Pain Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.
Robert GreifMedical Faculty, University of Bern, Bern, Switzerland.
Nicola DismaUnit for Research in Anesthesia, IRCCS Istituto Giannina Gaslini, Genoa, Italy.
Thomas RivaDepartment of Anesthesiology and Pain Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.ORCID 0000-0003-1297-3427
Thomas RiedelDivision of Pediatric Intensive Care Medicine, Department of Pediatrics, Bern University Hospital, Inselspital, University of Bern, Bern, Switzerland.
Alexander FuchsDepartment of Anesthesiology and Pain Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.

Funding

Burgergemeinde Bern
6 · The paper itself

Abstract

backgroundHigh-flow oxygen in children prolongs the apnea time. The exact mechanism remains unclear.

aimsThis study investigated whether low- and high-flow nasal oxygen are non-inferior to very high-flow oxygen in preventing lung volume loss during apnoea in children under general anesthesia. We also examined whether early onset oxygen using the Optiflow Switch cannula reduces lung volume loss compared to conventional late-onset application. Finally, we assessed the timing and regional distribution of lung volume changes using electrical impedance tomography (EIT).

methodsWe conducted a single center randomized controlled non-inferiority trial. After Ethics Committee approval and informed consent, we recruited 108 children (ASA1 and 2, 10-20 kg) undergoing elective general anesthesia. The primary endpoint was the normalized reduction in lung volume in relation to body weight (mL kg

results89/108 children were analyzed (low-flow n = 20, high-flow n = 24, very high-flow n = 21 and early onset high-flow n = 24.). The estimated mean (95% CI) reduction in lung volume was: low-flow 5.9 (5.3-7.8) mL kg

conclusionsApnoeic oxygenation with low-flow is non-inferior to very high-flow regarding lung volume loss in children. An early onset of apnoeic oxygenation after facemask ventilation may delay lung volume loss during apnoea.

Indexed as

ApneaLungOxygen Inhalation TherapyAnesthesia, GeneralChildChild, PreschoolElectric ImpedanceFemaleHumansInfantLung Volume MeasurementsMaleOxygenProspective StudiesOxygenairway pressureanesthesiaapnoeic oxygenationhigh‐flow oxygenlung volumepediatricsrespiratory physiology

Identifiers

PMID40679126
PMCPMC12686760

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Registered trials

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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.