Nonlinear Flow Sensor Calibration with an Accurate Syringe

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dc.contributorSistema FMUSP-HC: Faculdade de Medicina da Universidade de São Paulo (FMUSP) e Hospital das Clínicas da FMUSP
dc.contributor.authorBISELLI, Paolo Jose Cesare
dc.contributor.authorNOBREGA, Raquel Siqueira
dc.contributor.authorSORIANO, Francisco Garcia
dc.date.accessioned2018-11-21T17:00:05Z
dc.date.available2018-11-21T17:00:05Z
dc.date.issued2018
dc.description.abstractFlow sensors are required for monitoring patients on mechanical ventilation and in respiratory research. Proper calibration is important for ensuring accuracy and can be done with a precision syringe. This procedure, however, becomes complex for nonlinear flow sensors, which are commonly used. The objective of the present work was to develop an algorithm to allow the calibration of nonlinear flow sensors using an accurate syringe. We first noticed that a power law equation could properly fit the pressure-flow relationship of nonlinear flow sensors. We then developed a software code to estimate the parameters for this equation using a 3 L syringe (calibration syringe). Finally, we tested the performance of a calibrated flow sensor using a different 3 L syringe (testing syringe) and a commercially available spirometer. After calibration, the sensor had a bias ranging from -1.7% to 3.0% and precision from 0.012 L to 0.039 L for volumes measured with the 3 L testing syringe. Calibrated sensor performance was at least as good as the commercial sensor. This calibration procedure can be done at the bedside for both clinical and research purposes, therefore improving the accuracy of nonlinear flow sensors.
dc.description.indexMEDLINE
dc.identifier.citationSENSORS, v.18, n.7, article ID 2163, 9p, 2018
dc.identifier.doi10.3390/s18072163
dc.identifier.issn1424-8220
dc.identifier.urihttps://observatorio.fm.usp.br/handle/OPI/29354
dc.language.isoeng
dc.publisherMDPI
dc.relation.ispartofSensors
dc.rightsopenAccess
dc.rights.holderCopyright MDPI
dc.subjectflow sensor
dc.subjectcalibration
dc.subjectmechanical ventilation
dc.subjectnonlinear
dc.subject.otherintensive-care-unit
dc.subject.othermechanical ventilation
dc.subject.othertidal volumes
dc.subject.otherbench
dc.subject.othericu
dc.subject.wosChemistry, Analytical
dc.subject.wosElectrochemistry
dc.subject.wosInstruments & Instrumentation
dc.titleNonlinear Flow Sensor Calibration with an Accurate Syringe
dc.typearticle
dc.type.categoryoriginal article
dc.type.versionpublishedVersion
dspace.entity.typePublication
hcfmusp.citation.scopus9
hcfmusp.contributor.author-fmusphcPAOLO JOSE CESARE BISELLI
hcfmusp.contributor.author-fmusphcRAQUEL SIQUEIRA NOBREGA
hcfmusp.contributor.author-fmusphcFRANCISCO GARCIA SORIANO
hcfmusp.description.articlenumber2163
hcfmusp.description.issue7
hcfmusp.description.volume18
hcfmusp.origemWOS
hcfmusp.origem.pubmed29976851
hcfmusp.origem.scopus2-s2.0-85049751419
hcfmusp.origem.wosWOS:000441334300185
hcfmusp.publisher.cityBASEL
hcfmusp.publisher.countrySWITZERLAND
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