The humidity in a low-flow dräger fabius anesthesia workstation with or without thermal insulation or a heat and moisture exchanger: A prospective randomized clinical trial

Detalhes bibliográficos
Autor(a) principal: De Oliveira, Sergius A. R. [UNESP]
Data de Publicação: 2017
Outros Autores: Lucio, Lorena M. C. [UNESP], Modolo, Norma S. P. [UNESP], Hayashi, Yoko [UNESP], Braz, Mariana G. [UNESP], Carvalho, Lídia R. [UNESP], Braz, Leandro G. [UNESP], Braz, José Reinaldo C. [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1371/journal.pone.0170723
http://hdl.handle.net/11449/174135
Resumo: Background During anesthesia, as compared with intensive care, the time of the tracheal intubation is much shorter. An inhaled gas minimum humidity of 20 mgH2 O.L-1 is recommended to reduce the deleterious effects of dry gas on the airways during anesthesia with tracheal intubation. The Fabius GS Premium® anesthesia workstation (Dräger Medical, Lübeck, Germany) has a built-in hotplate to heat gases in the breathing circuit. A heat and moisture exchanger (HME) is used to further heat and humidify the inhaled gas. The humidity of the gases in the breathing circuit is influenced by the ambient temperature. We compared the humidity of the inhaled gases from a low-flow Fabius anesthesia workstation with or without thermal insulation (TI) of the breathing circuit and with or without an HME. Methods We conducted a prospective randomized trial in 41 adult female patients who underwent elective abdominal surgery. The patients were allocated into four groups according to the devices used to ventilate their lungs using a Dräger Fabius anesthesia workstation with a low gas flow (1 L.min-1 ): control, with TI, with an HME or with TI and an HME (TIHME). The mean temperature and humidity of the inhaled gases were measured during 2-h after connecting the patients to the breathing circuit. Results The mean inhaled gas temperature and absolute humidity were higher in the HME (29.2 ±1.3°C; 28.1±2.3 mgH2 O·L-1 ) and TIHME (30.1±1.2°C; 29.4±2.0 mgH2 O·L-1 ) groups compared with the control (27.5±1.0°C; 25.0±1.8 mgH2 OôL-1 ) and TI (27.2±1.1°C; 24.9±1.8 mgH2 O·L-1 ) groups (P = 0.003 and P<0.001, respectively). Conclusions The low-flow Fabius GS Premium breathing circuit provides the minimum humidity level of inhaled gases to avoid damage to the tracheobronchial epithelia during anesthesia. TI of the breathing circuit does not increase the humidity of the inhaled gases, whereas inserting an HME increases the moisture of the inhaled gases closer to physiological values.
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spelling The humidity in a low-flow dräger fabius anesthesia workstation with or without thermal insulation or a heat and moisture exchanger: A prospective randomized clinical trialBackground During anesthesia, as compared with intensive care, the time of the tracheal intubation is much shorter. An inhaled gas minimum humidity of 20 mgH2 O.L-1 is recommended to reduce the deleterious effects of dry gas on the airways during anesthesia with tracheal intubation. The Fabius GS Premium® anesthesia workstation (Dräger Medical, Lübeck, Germany) has a built-in hotplate to heat gases in the breathing circuit. A heat and moisture exchanger (HME) is used to further heat and humidify the inhaled gas. The humidity of the gases in the breathing circuit is influenced by the ambient temperature. We compared the humidity of the inhaled gases from a low-flow Fabius anesthesia workstation with or without thermal insulation (TI) of the breathing circuit and with or without an HME. Methods We conducted a prospective randomized trial in 41 adult female patients who underwent elective abdominal surgery. The patients were allocated into four groups according to the devices used to ventilate their lungs using a Dräger Fabius anesthesia workstation with a low gas flow (1 L.min-1 ): control, with TI, with an HME or with TI and an HME (TIHME). The mean temperature and humidity of the inhaled gases were measured during 2-h after connecting the patients to the breathing circuit. Results The mean inhaled gas temperature and absolute humidity were higher in the HME (29.2 ±1.3°C; 28.1±2.3 mgH2 O·L-1 ) and TIHME (30.1±1.2°C; 29.4±2.0 mgH2 O·L-1 ) groups compared with the control (27.5±1.0°C; 25.0±1.8 mgH2 OôL-1 ) and TI (27.2±1.1°C; 24.9±1.8 mgH2 O·L-1 ) groups (P = 0.003 and P<0.001, respectively). Conclusions The low-flow Fabius GS Premium breathing circuit provides the minimum humidity level of inhaled gases to avoid damage to the tracheobronchial epithelia during anesthesia. TI of the breathing circuit does not increase the humidity of the inhaled gases, whereas inserting an HME increases the moisture of the inhaled gases closer to physiological values.Department of Anesthesiology Botucatu Medical School UNESP-Univ Estadual PaulistaDepartment of Biostatistics Institute of Biosciences UNESP-Univ Estadual PaulistaDepartment of Anesthesiology Botucatu Medical School UNESP-Univ Estadual PaulistaDepartment of Biostatistics Institute of Biosciences UNESP-Univ Estadual PaulistaUniversidade Estadual Paulista (Unesp)De Oliveira, Sergius A. R. [UNESP]Lucio, Lorena M. C. [UNESP]Modolo, Norma S. P. [UNESP]Hayashi, Yoko [UNESP]Braz, Mariana G. [UNESP]Carvalho, Lídia R. [UNESP]Braz, Leandro G. [UNESP]Braz, José Reinaldo C. [UNESP]2018-12-11T17:09:30Z2018-12-11T17:09:30Z2017-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://dx.doi.org/10.1371/journal.pone.0170723PLoS ONE, v. 12, n. 1, 2017.1932-6203http://hdl.handle.net/11449/17413510.1371/journal.pone.01707232-s2.0-850108676442-s2.0-85010867644.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPLoS ONE1,164info:eu-repo/semantics/openAccess2024-08-14T13:20:05Zoai:repositorio.unesp.br:11449/174135Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-14T13:20:05Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv The humidity in a low-flow dräger fabius anesthesia workstation with or without thermal insulation or a heat and moisture exchanger: A prospective randomized clinical trial
title The humidity in a low-flow dräger fabius anesthesia workstation with or without thermal insulation or a heat and moisture exchanger: A prospective randomized clinical trial
spellingShingle The humidity in a low-flow dräger fabius anesthesia workstation with or without thermal insulation or a heat and moisture exchanger: A prospective randomized clinical trial
De Oliveira, Sergius A. R. [UNESP]
title_short The humidity in a low-flow dräger fabius anesthesia workstation with or without thermal insulation or a heat and moisture exchanger: A prospective randomized clinical trial
title_full The humidity in a low-flow dräger fabius anesthesia workstation with or without thermal insulation or a heat and moisture exchanger: A prospective randomized clinical trial
title_fullStr The humidity in a low-flow dräger fabius anesthesia workstation with or without thermal insulation or a heat and moisture exchanger: A prospective randomized clinical trial
title_full_unstemmed The humidity in a low-flow dräger fabius anesthesia workstation with or without thermal insulation or a heat and moisture exchanger: A prospective randomized clinical trial
title_sort The humidity in a low-flow dräger fabius anesthesia workstation with or without thermal insulation or a heat and moisture exchanger: A prospective randomized clinical trial
author De Oliveira, Sergius A. R. [UNESP]
author_facet De Oliveira, Sergius A. R. [UNESP]
Lucio, Lorena M. C. [UNESP]
Modolo, Norma S. P. [UNESP]
Hayashi, Yoko [UNESP]
Braz, Mariana G. [UNESP]
Carvalho, Lídia R. [UNESP]
Braz, Leandro G. [UNESP]
Braz, José Reinaldo C. [UNESP]
author_role author
author2 Lucio, Lorena M. C. [UNESP]
Modolo, Norma S. P. [UNESP]
Hayashi, Yoko [UNESP]
Braz, Mariana G. [UNESP]
Carvalho, Lídia R. [UNESP]
Braz, Leandro G. [UNESP]
Braz, José Reinaldo C. [UNESP]
author2_role author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv De Oliveira, Sergius A. R. [UNESP]
Lucio, Lorena M. C. [UNESP]
Modolo, Norma S. P. [UNESP]
Hayashi, Yoko [UNESP]
Braz, Mariana G. [UNESP]
Carvalho, Lídia R. [UNESP]
Braz, Leandro G. [UNESP]
Braz, José Reinaldo C. [UNESP]
description Background During anesthesia, as compared with intensive care, the time of the tracheal intubation is much shorter. An inhaled gas minimum humidity of 20 mgH2 O.L-1 is recommended to reduce the deleterious effects of dry gas on the airways during anesthesia with tracheal intubation. The Fabius GS Premium® anesthesia workstation (Dräger Medical, Lübeck, Germany) has a built-in hotplate to heat gases in the breathing circuit. A heat and moisture exchanger (HME) is used to further heat and humidify the inhaled gas. The humidity of the gases in the breathing circuit is influenced by the ambient temperature. We compared the humidity of the inhaled gases from a low-flow Fabius anesthesia workstation with or without thermal insulation (TI) of the breathing circuit and with or without an HME. Methods We conducted a prospective randomized trial in 41 adult female patients who underwent elective abdominal surgery. The patients were allocated into four groups according to the devices used to ventilate their lungs using a Dräger Fabius anesthesia workstation with a low gas flow (1 L.min-1 ): control, with TI, with an HME or with TI and an HME (TIHME). The mean temperature and humidity of the inhaled gases were measured during 2-h after connecting the patients to the breathing circuit. Results The mean inhaled gas temperature and absolute humidity were higher in the HME (29.2 ±1.3°C; 28.1±2.3 mgH2 O·L-1 ) and TIHME (30.1±1.2°C; 29.4±2.0 mgH2 O·L-1 ) groups compared with the control (27.5±1.0°C; 25.0±1.8 mgH2 OôL-1 ) and TI (27.2±1.1°C; 24.9±1.8 mgH2 O·L-1 ) groups (P = 0.003 and P<0.001, respectively). Conclusions The low-flow Fabius GS Premium breathing circuit provides the minimum humidity level of inhaled gases to avoid damage to the tracheobronchial epithelia during anesthesia. TI of the breathing circuit does not increase the humidity of the inhaled gases, whereas inserting an HME increases the moisture of the inhaled gases closer to physiological values.
publishDate 2017
dc.date.none.fl_str_mv 2017-01-01
2018-12-11T17:09:30Z
2018-12-11T17:09:30Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1371/journal.pone.0170723
PLoS ONE, v. 12, n. 1, 2017.
1932-6203
http://hdl.handle.net/11449/174135
10.1371/journal.pone.0170723
2-s2.0-85010867644
2-s2.0-85010867644.pdf
url http://dx.doi.org/10.1371/journal.pone.0170723
http://hdl.handle.net/11449/174135
identifier_str_mv PLoS ONE, v. 12, n. 1, 2017.
1932-6203
10.1371/journal.pone.0170723
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2-s2.0-85010867644.pdf
dc.language.iso.fl_str_mv eng
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