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dc.contributor | Facultat d'Informàtica de Barcelona |
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dc.contributor.author | Riera del Brío, Jordi |
dc.contributor.author | Pérez Teran, Purificación |
dc.contributor.author | Cortés Martínez, Jordi |
dc.contributor.author | Roca Gas, Oriol |
dc.contributor.author | Masclans Enviz, Joan Ramon |
dc.contributor.author | Rello Condomines, Jordi |
dc.date | 2013-04-01 |
dc.identifier.citation | Riera, J. [et al.]. Effect of high-flow nasal cannula and body position on end-expiratory lung volume: A cohort study using electrical impedance tomography. "Respiratory Care", 01 Abril 2013, vol. 58, núm. 4, p. 589-596. |
dc.identifier.citation | 0020-1324 |
dc.identifier.citation | 10.4187/respcare.02086 |
dc.identifier.uri | http://hdl.handle.net/2117/20813 |
dc.description.abstract | : Electrical impedance tomography measures changes in lung impedance, which are mainly related to changes in lung volume. We used electrical impedance tomography to inves- tigate the effects of high-flow nasal cannula (HFNC) and body position on global and regional end-expiratory lung impedance variation ( EELI). METHODS: Prospective study with 20 healthy adults. Two periods were defined: the first in supine position and the second in prone position. Each period was divided into 3 phases. In the first and the third phases the subjects were breathing ambient air, and in the second HFNC was implemented. Four regions of interest were defined: 2 ventral and 2 dorsal. For each respiratory cycle, global and regional EELI were measured by electrical impedance tomography and were expressed as a function of the tidal variation of the first stable respiratory cycle (units). RESULTS: HFNC increased global EELI by 1.26 units (95% CI 1.20–1.31, P < .001) in supine position, and by 0.87 units (95% CI 0.82–0.91, P < .001) in prone position. The distribution of EELI was homogeneous in prone position, with no difference between ventral and dorsal lung regions ( 0.01 units, 95% CI 0.01 to 0, P .18), while in supine position a significant difference was found (0.22 units, 95% CI 0.21–0.23, P < .001) with increased EELI in ventral areas. CONCLUSIONS: HFNC increased global EELI in our population, regardless of body position, suggesting an increase in functional residual capacity. Prone positioning was related to a more homogeneous distribution of EELI, while in supine position EELI was higher in the ventral lung regions. |
dc.language.iso | eng |
dc.relation | http://rc.rcjournal.com/content/58/4/589 |
dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Spain |
dc.rights | info:eu-repo/semantics/openAccess |
dc.rights | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
dc.subject | Tomography |
dc.subject | Body position |
dc.subject | Electrical impedance tomography |
dc.subject | High-flow nasal cannula |
dc.subject | Lung volume |
dc.subject | Oxygen therapy |
dc.subject | Prone position |
dc.subject | Tomografia -- Aparells i instruments |
dc.title | Effect of high-flow nasal cannula and body position on end-expiratory lung volume: A cohort study using electrical impedance tomography |
dc.type | info:eu-repo/semantics/publishedVersion |
dc.type | info:eu-repo/semantics/article |