Evidence map›Paper›PMID 30726247›Full record

ArticlePloS one2019

Assessment of a storage system to deliver uninterrupted therapeutic oxygen during power outages in resource-limited settings.

Ryan Calderon, Melissa C Morgan, Mark Kuiper, Harriet Nambuya, Nicholas Wangwe, Akos Somoskovi, Daniel Lieberman

Abstract read
In one paragraph

Article in PloS one, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed, 1 pooled it
–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

7 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Article
  4. Review
  5. Article
  6. Power Outages and Community Health: a Narrative Review.Current environmental health reports · 2020
    Review
  7. Ventilators are not the answer in Africa.African journal of primary health care & family medicine · 2020
    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

7 authors.

Ryan CalderonIntellectual Ventures Laboratory, Bellevue, Washington, United States of America.
Melissa C MorganDepartment of Pediatrics, University of California San Francisco, San Francisco, California, United States of America.ORCID 0000-0003-3457-8452
Mark KuiperIntellectual Ventures Laboratory, Bellevue, Washington, United States of America.
Harriet NambuyaDepartment of Pediatrics, Jinja Regional Referral Hospital, Jinja, Uganda.
Nicholas WangweDepartment of Pediatrics, Jinja Regional Referral Hospital, Jinja, Uganda.
Akos SomoskoviIntellectual Ventures Global Good Fund, Bellevue, Washington, United States of America.
Daniel LiebermanIntellectual Ventures Laboratory, Bellevue, Washington, United States of America.ORCID 0000-0002-9117-4377

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Access to therapeutic oxygen remains a challenge in the effort to reduce pneumonia mortality among children in low- and middle-income countries. The use of oxygen concentrators is common, but their effectiveness in delivering uninterrupted oxygen is gated by reliability of the power grid. Often cylinders are employed to provide continuous coverage, but these can present other logistical challenges. In this study, we examined the use of a novel, low-pressure oxygen storage system to capture excess oxygen from a concentrator to be delivered to patients during an outage. A prototype was built and tested in a non-clinical trial in Jinja, Uganda. The trial was carried out at Jinja Regional Referral Hospital over a 75-day period. The flow rate of the unit was adjusted once per week between 0.5 and 5 liters per minute. Over the trial period, 1284 power failure episodes with a mean duration of 3.1 minutes (range 0.08 to 1720 minutes) were recorded. The low-pressure system was able to deliver oxygen over 56% of the 4,295 power outage minutes and cover over 99% of power outage events over the course of the study. These results demonstrate the technical feasibility of a method to extend oxygen availability and provide a basis for clinical trials.

Indexed as

EmergenciesMedication Systems, HospitalDeveloping CountriesDrug StorageEquipment and Supplies, HospitalFeasibility StudiesHealth ResourcesHumansOxygenPneumoniaReproducibility of ResultsTertiary Care CentersUgandaOxygen

Identifiers

PMID30726247
PMCPMC6364892

What OpenQuestion holds

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LicenceCC BY
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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.