Comparison of four methods for measuring elevation of FRC in mechanically ventilated infants
The aim of the study was to compare measurements of the elevation of functional residual capacity (FRC) above the relaxation volume obtained in 34 mechanically ventilated infants (median weight 2.6 kg, range 1.2-9) from four different methods: (1) direct measurement of the complete exhalation volume...
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| Veröffentlicht in: | Intensive care medicine 1999-10, Vol.25 (10), p.1118-1125 |
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| creator | RIOU, Y STORME, L LECLERC, F NEVE, V LOGIER, R LEQUIEN, P |
| description | The aim of the study was to compare measurements of the elevation of functional residual capacity (FRC) above the relaxation volume obtained in 34 mechanically ventilated infants (median weight 2.6 kg, range 1.2-9) from four different methods: (1) direct measurement of the complete exhalation volume after brief disconnection from the ventilator, (2) calculated measurement from total positive end-expiratory pressure (PEEP) measured by end-expiratory occlusion of the breathing circuit, (3) extrapolated evaluation from the mathematical model of Brody, (4) extrapolated evaluation from the passive expiration method. We considered the direct measurement (1) as the "gold standard". Measurements obtained by total PEEP (2) and by the Brody's mathematical model (3) provided similar results than the direct measurement. Conversely, graphical extrapolation from the passive expiration method (4) underestimated the elevation of FRC. In conclusion, we suggest using the mathematical extrapolation from the Brody's model to evaluate the elevation of FRC in mechanically ventilated infants: this method is non-invasive, does not require disruption of gas flow, can be easily performed with all the neonatal ventilators, and allows continuous breath-by-breath measurements. |
| doi_str_mv | 10.1007/s001340051021 |
| format | Article |
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We considered the direct measurement (1) as the "gold standard". Measurements obtained by total PEEP (2) and by the Brody's mathematical model (3) provided similar results than the direct measurement. Conversely, graphical extrapolation from the passive expiration method (4) underestimated the elevation of FRC. In conclusion, we suggest using the mathematical extrapolation from the Brody's model to evaluate the elevation of FRC in mechanically ventilated infants: this method is non-invasive, does not require disruption of gas flow, can be easily performed with all the neonatal ventilators, and allows continuous breath-by-breath measurements.</description><identifier>ISSN: 0342-4642</identifier><identifier>EISSN: 1432-1238</identifier><identifier>DOI: 10.1007/s001340051021</identifier><identifier>PMID: 10551968</identifier><identifier>CODEN: ICMED9</identifier><language>eng</language><publisher>Heidelberg: Springer</publisher><subject>Airway Resistance ; Anesthesia. Intensive care medicine. Transfusions. Cell therapy and gene therapy ; Biological and medical sciences ; Blood Gas Analysis ; Bronchiolitis - complications ; Bronchopulmonary Dysplasia - complications ; Emergency and intensive respiratory care ; Functional Residual Capacity ; Humans ; Hyaline Membrane Disease - complications ; Infant ; Infant, Newborn ; Intensive care ; Intensive care medicine ; Lung Compliance ; Mathematical models ; Mathematics ; Medical sciences ; Methods ; Models, Statistical ; Monitoring, Physiologic - methods ; Pediatrics ; Positive-Pressure Respiration, Intrinsic - diagnosis ; Positive-Pressure Respiration, Intrinsic - etiology ; Positive-Pressure Respiration, Intrinsic - metabolism ; Positive-Pressure Respiration, Intrinsic - physiopathology ; Pressure transducers ; Reproducibility of Results ; Respiration, Artificial - adverse effects ; Respiration, Artificial - methods ; Respiratory distress syndrome ; Respiratory failure ; Respiratory Insufficiency - etiology ; Respiratory Insufficiency - metabolism ; Respiratory Insufficiency - physiopathology ; Respiratory Insufficiency - therapy ; Respiratory system ; Ventilators</subject><ispartof>Intensive care medicine, 1999-10, Vol.25 (10), p.1118-1125</ispartof><rights>1999 INIST-CNRS</rights><rights>Springer-Verlag Berlin Heidelberg 1999</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c384t-e0f094ab2bde0f6abeba75480b1cd17ed7a76a9acebd44252b3c30f566926f063</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27901,27902</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=1997861$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/10551968$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>RIOU, Y</creatorcontrib><creatorcontrib>STORME, L</creatorcontrib><creatorcontrib>LECLERC, F</creatorcontrib><creatorcontrib>NEVE, V</creatorcontrib><creatorcontrib>LOGIER, R</creatorcontrib><creatorcontrib>LEQUIEN, P</creatorcontrib><title>Comparison of four methods for measuring elevation of FRC in mechanically ventilated infants</title><title>Intensive care medicine</title><addtitle>Intensive Care Med</addtitle><description>The aim of the study was to compare measurements of the elevation of functional residual capacity (FRC) above the relaxation volume obtained in 34 mechanically ventilated infants (median weight 2.6 kg, range 1.2-9) from four different methods: (1) direct measurement of the complete exhalation volume after brief disconnection from the ventilator, (2) calculated measurement from total positive end-expiratory pressure (PEEP) measured by end-expiratory occlusion of the breathing circuit, (3) extrapolated evaluation from the mathematical model of Brody, (4) extrapolated evaluation from the passive expiration method. We considered the direct measurement (1) as the "gold standard". Measurements obtained by total PEEP (2) and by the Brody's mathematical model (3) provided similar results than the direct measurement. Conversely, graphical extrapolation from the passive expiration method (4) underestimated the elevation of FRC. In conclusion, we suggest using the mathematical extrapolation from the Brody's model to evaluate the elevation of FRC in mechanically ventilated infants: this method is non-invasive, does not require disruption of gas flow, can be easily performed with all the neonatal ventilators, and allows continuous breath-by-breath measurements.</description><subject>Airway Resistance</subject><subject>Anesthesia. Intensive care medicine. Transfusions. Cell therapy and gene therapy</subject><subject>Biological and medical sciences</subject><subject>Blood Gas Analysis</subject><subject>Bronchiolitis - complications</subject><subject>Bronchopulmonary Dysplasia - complications</subject><subject>Emergency and intensive respiratory care</subject><subject>Functional Residual Capacity</subject><subject>Humans</subject><subject>Hyaline Membrane Disease - complications</subject><subject>Infant</subject><subject>Infant, Newborn</subject><subject>Intensive care</subject><subject>Intensive care medicine</subject><subject>Lung Compliance</subject><subject>Mathematical models</subject><subject>Mathematics</subject><subject>Medical sciences</subject><subject>Methods</subject><subject>Models, Statistical</subject><subject>Monitoring, Physiologic - methods</subject><subject>Pediatrics</subject><subject>Positive-Pressure Respiration, Intrinsic - diagnosis</subject><subject>Positive-Pressure Respiration, Intrinsic - etiology</subject><subject>Positive-Pressure Respiration, Intrinsic - metabolism</subject><subject>Positive-Pressure Respiration, Intrinsic - physiopathology</subject><subject>Pressure transducers</subject><subject>Reproducibility of Results</subject><subject>Respiration, Artificial - adverse effects</subject><subject>Respiration, Artificial - methods</subject><subject>Respiratory distress syndrome</subject><subject>Respiratory failure</subject><subject>Respiratory Insufficiency - etiology</subject><subject>Respiratory Insufficiency - metabolism</subject><subject>Respiratory Insufficiency - physiopathology</subject><subject>Respiratory Insufficiency - therapy</subject><subject>Respiratory system</subject><subject>Ventilators</subject><issn>0342-4642</issn><issn>1432-1238</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1999</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><sourceid>BENPR</sourceid><recordid>eNpd0N9LwzAQB_Agis7po69SRHyr5lfT9lGKU2EgiL4J5ZomLqNNZtIO9t-bsYE_nnLhPhx3X4QuCL4lGOd3AWPCOMYZwZQcoAnhjKaEsuIQTTDjNOWC0xN0GsIyylxk5BidEJxlpBTFBH1Url-BN8HZxOlEu9EnvRoWrg3xs60hjN7Yz0R1ag2D2bnZa5UYG7tyAdZI6LpNslZ2MB0Mqo0tDXYIZ-hIQxfU-f6dovfZw1v1lM5fHp-r-3kqWcGHVGGNSw4NbdpYCmhUA3nGC9wQ2ZJctTnkAkqQqmk5pxltmGRYZ0KUVGgs2BTd7OauvPsaVRjq3gSpug6scmOoo-M83hvh1T-4jAfbuFtdlrTIqRA0onSHpHcheKXrlTc9-E1NcL3NvP6TefSX-6Fj06v2l96FHMH1HkCIUWkPVprw48oyLwRh34euiRY</recordid><startdate>19991001</startdate><enddate>19991001</enddate><creator>RIOU, Y</creator><creator>STORME, L</creator><creator>LECLERC, F</creator><creator>NEVE, V</creator><creator>LOGIER, R</creator><creator>LEQUIEN, P</creator><general>Springer</general><general>Springer Nature B.V</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7RV</scope><scope>7X7</scope><scope>7XB</scope><scope>88E</scope><scope>8AO</scope><scope>8FD</scope><scope>8FI</scope><scope>8FJ</scope><scope>8FK</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>BENPR</scope><scope>CCPQU</scope><scope>FR3</scope><scope>FYUFA</scope><scope>GHDGH</scope><scope>K9.</scope><scope>M0S</scope><scope>M1P</scope><scope>M7Z</scope><scope>NAPCQ</scope><scope>P64</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>7X8</scope></search><sort><creationdate>19991001</creationdate><title>Comparison of four methods for measuring elevation of FRC in mechanically ventilated infants</title><author>RIOU, Y ; STORME, L ; LECLERC, F ; NEVE, V ; LOGIER, R ; LEQUIEN, P</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c384t-e0f094ab2bde0f6abeba75480b1cd17ed7a76a9acebd44252b3c30f566926f063</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1999</creationdate><topic>Airway Resistance</topic><topic>Anesthesia. Intensive care medicine. Transfusions. Cell therapy and gene therapy</topic><topic>Biological and medical sciences</topic><topic>Blood Gas Analysis</topic><topic>Bronchiolitis - complications</topic><topic>Bronchopulmonary Dysplasia - complications</topic><topic>Emergency and intensive respiratory care</topic><topic>Functional Residual Capacity</topic><topic>Humans</topic><topic>Hyaline Membrane Disease - complications</topic><topic>Infant</topic><topic>Infant, Newborn</topic><topic>Intensive care</topic><topic>Intensive care medicine</topic><topic>Lung Compliance</topic><topic>Mathematical models</topic><topic>Mathematics</topic><topic>Medical sciences</topic><topic>Methods</topic><topic>Models, Statistical</topic><topic>Monitoring, Physiologic - methods</topic><topic>Pediatrics</topic><topic>Positive-Pressure Respiration, Intrinsic - diagnosis</topic><topic>Positive-Pressure Respiration, Intrinsic - etiology</topic><topic>Positive-Pressure Respiration, Intrinsic - metabolism</topic><topic>Positive-Pressure Respiration, Intrinsic - physiopathology</topic><topic>Pressure transducers</topic><topic>Reproducibility of Results</topic><topic>Respiration, Artificial - adverse effects</topic><topic>Respiration, Artificial - methods</topic><topic>Respiratory distress syndrome</topic><topic>Respiratory failure</topic><topic>Respiratory Insufficiency - etiology</topic><topic>Respiratory Insufficiency - metabolism</topic><topic>Respiratory Insufficiency - physiopathology</topic><topic>Respiratory Insufficiency - therapy</topic><topic>Respiratory system</topic><topic>Ventilators</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>RIOU, Y</creatorcontrib><creatorcontrib>STORME, L</creatorcontrib><creatorcontrib>LECLERC, F</creatorcontrib><creatorcontrib>NEVE, V</creatorcontrib><creatorcontrib>LOGIER, R</creatorcontrib><creatorcontrib>LEQUIEN, P</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>ProQuest Nursing and Allied Health Journals</collection><collection>Health & Medical Collection</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Medical Database (Alumni Edition)</collection><collection>ProQuest Pharma Collection</collection><collection>Technology Research Database</collection><collection>Hospital Premium Collection</collection><collection>Hospital Premium Collection (Alumni Edition)</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>ProQuest Central (Alumni)</collection><collection>ProQuest Central</collection><collection>ProQuest Central</collection><collection>ProQuest One Community College</collection><collection>Engineering Research Database</collection><collection>Health Research Premium Collection</collection><collection>Health Research Premium Collection (Alumni)</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>Health & Medical Collection (Alumni Edition)</collection><collection>Medical Database</collection><collection>Biochemistry Abstracts 1</collection><collection>Nursing & Allied Health Premium</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><collection>MEDLINE - Academic</collection><jtitle>Intensive care medicine</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>RIOU, Y</au><au>STORME, L</au><au>LECLERC, F</au><au>NEVE, V</au><au>LOGIER, R</au><au>LEQUIEN, P</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Comparison of four methods for measuring elevation of FRC in mechanically ventilated infants</atitle><jtitle>Intensive care medicine</jtitle><addtitle>Intensive Care Med</addtitle><date>1999-10-01</date><risdate>1999</risdate><volume>25</volume><issue>10</issue><spage>1118</spage><epage>1125</epage><pages>1118-1125</pages><issn>0342-4642</issn><eissn>1432-1238</eissn><coden>ICMED9</coden><abstract>The aim of the study was to compare measurements of the elevation of functional residual capacity (FRC) above the relaxation volume obtained in 34 mechanically ventilated infants (median weight 2.6 kg, range 1.2-9) from four different methods: (1) direct measurement of the complete exhalation volume after brief disconnection from the ventilator, (2) calculated measurement from total positive end-expiratory pressure (PEEP) measured by end-expiratory occlusion of the breathing circuit, (3) extrapolated evaluation from the mathematical model of Brody, (4) extrapolated evaluation from the passive expiration method. We considered the direct measurement (1) as the "gold standard". Measurements obtained by total PEEP (2) and by the Brody's mathematical model (3) provided similar results than the direct measurement. Conversely, graphical extrapolation from the passive expiration method (4) underestimated the elevation of FRC. In conclusion, we suggest using the mathematical extrapolation from the Brody's model to evaluate the elevation of FRC in mechanically ventilated infants: this method is non-invasive, does not require disruption of gas flow, can be easily performed with all the neonatal ventilators, and allows continuous breath-by-breath measurements.</abstract><cop>Heidelberg</cop><cop>Berlin</cop><pub>Springer</pub><pmid>10551968</pmid><doi>10.1007/s001340051021</doi><tpages>8</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Airway Resistance Anesthesia. Intensive care medicine. Transfusions. Cell therapy and gene therapy Biological and medical sciences Blood Gas Analysis Bronchiolitis - complications Bronchopulmonary Dysplasia - complications Emergency and intensive respiratory care Functional Residual Capacity Humans Hyaline Membrane Disease - complications Infant Infant, Newborn Intensive care Intensive care medicine Lung Compliance Mathematical models Mathematics Medical sciences Methods Models, Statistical Monitoring, Physiologic - methods Pediatrics Positive-Pressure Respiration, Intrinsic - diagnosis Positive-Pressure Respiration, Intrinsic - etiology Positive-Pressure Respiration, Intrinsic - metabolism Positive-Pressure Respiration, Intrinsic - physiopathology Pressure transducers Reproducibility of Results Respiration, Artificial - adverse effects Respiration, Artificial - methods Respiratory distress syndrome Respiratory failure Respiratory Insufficiency - etiology Respiratory Insufficiency - metabolism Respiratory Insufficiency - physiopathology Respiratory Insufficiency - therapy Respiratory system Ventilators |
| title | Comparison of four methods for measuring elevation of FRC in mechanically ventilated infants |
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