PytuTester: RaspberryPi open-source ventilator tester.

Félix Morales, Luis Bernal, Gustavo Pereira, Sandra Pérez-Buitrago, Michael Kammer, D H Stalder

Abstract read

In one paragraph

Article in HardwareX, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it

0cells of the map it votes in

1citing 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

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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

1 citing paper in PubMed.

Design of a low-cost, portable blower-based breath simulator using 3D printing for respiratory research and education.HardwareX · 2026
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.

Félix MoralesFacultad de Ingeniería, Universidad Nacional de Asunción, Paraguay.

Luis BernalFacultad de Ingeniería, Universidad Nacional de Asunción, Paraguay.

Gustavo PereiraFacultad de Ingeniería, Universidad Nacional de Asunción, Paraguay.

Sandra Pérez-BuitragoDepartamento de Ingeniería, Pontificia Universidad Católica del Perú, Peru.

Michael KammerDivision of Allergy, Pulmonary, and Critical Care Medicine, Vanderbilt University Medical Center, Nashville, TN 37235, United States.

D H StalderFacultad de Ingeniería, Universidad Nacional de Asunción, Paraguay.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

PytuTester is an open-source ventilator tester developed to help bio-engineers in the design and verification of new ventilator prototypes. A ventilator tester allows measuring the flow, pressure, volume, and oxygen concentration provided to the patient. During the global pandemic COVID-19, several open-source ventilators prototypes were developed; however, due to high cost and demand testers, they were not available. In this context, a low-cost tester was developed using a Raspberry Pi and medical-grade sensors for the test ventilators prototypes. This paper presents the design files, software interface, and validations tests. Our results indicate that the tester has good accuracy to evaluate the efficacy and performance of new prototypes. When tested on two ventilator designs developed in Paraguay, PytuTester reported flow profiles that were concordant with the industry-standard VT650 Gas Flow Analyzer. PytuTester was then field deployed to test several DIY ventilator designs in low-resource areas.

Indexed as

Low-costMedical hardwareOpen sourcePandemic COVID-19Ventilator tester

Identifiers

PMID35847180

DOI10.1016/j.ohx.2022.e00334

PMCPMC9278071

What OpenQuestion holds

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LicenceCC BY

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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.