Evidence map›Paper›PMID 31533792›Full record

SynthesisCritical care (London, England)2019

Preoxygenation before intubation in adult patients with acute hypoxemic respiratory failure: a network meta-analysis of randomized trials.

Ka Man Fong, Shek Yin Au, George Wing Yiu Ng

Registry-linked trialOpen access · goldAbstract readSystematic ReviewNetwork Meta-Analysis
In one paragraph

Synthesis in Critical care (London, England), 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05666908 (High-flow Nasal Oxygenation Improves Blood Oxygen Saturation During Asphyxia During Pulmonary Surgery With Double-lumen Endotracheal Intubation), which is not on this map. Cited by 30 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed, 1 pooled it
10.4field-weighted citation impact, top 1% of its field
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.

NCT05666908 naunknown statusnot on this mapstarted 2023, after this paper: background citation

High-flow Nasal Oxygenation Improves Blood Oxygen Saturation During Asphyxia During Pulmonary Surgery With Double-lumen Endotracheal Intubation: a Randomized Controlled Study

TypeinterventionalSponsorShenzhen Second People's HospitalRan2023 to 2024Enrolled112ConditionsLung Neoplasms, PneumothoraxArmsHFNO
3 · Its place in the literature

Who cites it

30 citing papers in PubMed, 1 synthesis or guideline pooled it, 78 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Trial
  4. Trial
  5. Ten tips for a safe approach in airway management.Journal of anesthesia, analgesia and critical care · 2026
    Review
  6. Article
  7. Article
  8. Review
  9. Non-invasive ventilation for preoxygenation during prehospital anaesthesia - a prospective observational study.Scandinavian journal of trauma, resuscitation and emergency medicine · 2025
    Observational
  10. Article
  11. Article
  12. [Use of noninvasive ventilation for preoxygenation during emergency intubation].Medizinische Klinik, Intensivmedizin und Notfallmedizin · 2024
    Article
  13. Preoxygenation and apneic oxygenation in emergency airway management.Clinical and experimental emergency medicine · 2024
    Article
  14. Review
  15. Review
  16. Review
  17. Article
  18. Article
  19. Article
  20. 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

3 authors at 1 institution in 3 countries.

Ka Man FongDepartment of Intensive Care, Queen Elizabeth Hospital, 30 Gascoigne Road, Kowloon, Hong Kong SAR. ckmfong@gmail.com.ORCID 0000-0003-1491-5335
Shek Yin AuDepartment of Intensive Care, Queen Elizabeth Hospital, 30 Gascoigne Road, Kowloon, Hong Kong SAR.
George Wing Yiu NgDepartment of Intensive Care, Queen Elizabeth Hospital, 30 Gascoigne Road, Kowloon, Hong Kong SAR.
Hospital Authority · HK

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPatients with acute hypoxemic respiratory failure are at risk for life-threatening complications during endotracheal intubation. Preoxygenation might help reduce the risk of hypoxemia and intubation-related complications. This network meta-analysis summarizes the efficacy and safety of preoxygenation methods in adult patients with acute hypoxemic respiratory failure.

methodsWe searched PubMed, EMBASE, and the Cochrane Library Central Register of Controlled Trials through April 2019 for randomized controlled trials (RCT) that studied the use of conventional oxygen therapy (COT), high-flow nasal cannula (HFNC), noninvasive ventilation (NIV), and HFNC and NIV as preoxygenation before intubation in patients with acute hypoxemic respiratory failure. Citations' screening, study selection, data extraction, and risk of bias assessment were independently performed by two authors. The primary outcome was the lowest SpO

resultsWe included 7 RCTs (959 patients). Patients preoxygenated with NIV had significantly less desaturation than patients treated with COT (mean difference, MD 5.53, 95% CI 2.71, 8.34) and HFNC (MD 3.58, 95% CI 0.59, 6.57). Both NIV (odds ratio, OR 0.43, 95% CI 0.21, 0.87) and HFNC (OR 0.49, 95% CI 0.28, 0.88) resulted in a lower risk of intubation-related complications than COT. There were no significant mortality differences among the use of NIV, HFNC, COT, and HFNC and NIV during preoxygenation.

conclusionsIn adult patients with acute hypoxemic respiratory failure, NIV is a safe and probably the most effective preoxygenation method.

Indexed as

AdultHospital MortalityHumansIntubation, IntratrachealOxygenOxygen Inhalation TherapyRandomized Controlled Trials as TopicRespiratory InsufficiencyOxygenHigh flow nasal cannulaMeta-analysisNoninvasive ventilationPreoxygenationRespiratory failure

Identifiers

PMID31533792
PMCPMC6751657
OpenAlexW2974820228

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

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.