Evidence map›Paper›PMID 34491428›Full record

Trial reportJournal of anesthesia2022

Investigation of the optimal method of oxygen administration with simultaneous use of a surgical mask: a randomized control study.

Yusuke Matsui, Tomonori Takazawa, Akihito Takemae, Yukie Murooka, Masafumi Kanamoto, Shigeru Saito

Open access · hybridAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Journal of anesthesia, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
0.9field-weighted citation impact, top 25% 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.

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

2 citing papers in PubMed, 6 citations in OpenAlex.

  1. Article
  2. 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

6 authors at 2 institutions in 1 country.

Yusuke MatsuiDepartment of Anesthesiology, Gunma University Graduate School of Medicine, Maebashi, Japan.
Tomonori TakazawaIntensive Care Unit, Gunma University Hospital, 3-39-15 Showa-machi, Maebashi, Gunma, 371-8511, Japan. takazawt@gunma-u.ac.jp.ORCID http://orcid.org/0000-0002-0119-3532
Akihito TakemaeDepartment of Anesthesiology, Gunma University Graduate School of Medicine, Maebashi, Japan.
Yukie MurookaDepartment of Anesthesiology, Gunma University Graduate School of Medicine, Maebashi, Japan.
Masafumi KanamotoIntensive Care Unit, Gunma University Hospital, 3-39-15 Showa-machi, Maebashi, Gunma, 371-8511, Japan.
Shigeru SaitoDepartment of Anesthesiology, Gunma University Graduate School of Medicine, Maebashi, Japan.
Gunma University · JPGunma University Hospital · JP

Funding

japan society for the promotion of science 20K17828
6 · The paper itself

Abstract

purposeFrom the perspective of infection prevention during the Coronavirus disease 2019 (COVID-19) pandemic, a recommendation was made to use surgical masks after extubation in patients in the operating room. For compliance with this recommendation, anesthesiologists need to administer oxygen to the patient with an oxygen mask over the surgical mask. However, no studies have investigated whether this method allows good maintenance of oxygenation in patients. This study aimed to investigate which method of oxygen administration lends itself best to use with a surgical mask in terms of oxygenation.

methodWe administered oxygen to the study subjects using all the following three methods in random order: an oxygen mask over or under a surgical mask and a nasal cannula under the surgical mask. Oxygenation was assessed using the oxygen reserve index (ORi) and end-tidal oxygen concentration (EtO

resultThis study included 24 healthy volunteers. ORi values with administration of oxygen were higher in the order of a nasal cannula under the surgical mask, an oxygen mask under the surgical mask, and an oxygen mask over the surgical mask, with median values of 0.50, 0.48, and 0.43, respectively, and statistically significant differences between all groups (P < 0.001). EtO

conclusionWearing a surgical mask over the nasal cannula during oxygen administration is beneficial for oxygenation and might help prevent aerosol dispersal.

Indexed as

COVID-19MasksCannulaHumansOxygenOxygen Inhalation TherapySARS-CoV-2OxygenCOVID-19Oxygen administrationOxygen reserve indexSurgical mask

Identifiers

PMID34491428
PMCPMC8422829
OpenAlexW3197562864

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.