Non-invasive monitoring of diaphragmatic timing by means of surface contact sensors: an experimental study in dogs

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Fiz JA, Jané R, Torres A, Morera J, Galdiz B, Gea J, Grassino A. Non-invasive monitoring of diaphragmatic timing by means of surface contact sensors: an experimental study in dogs. BMC Pulm Med. 2004; 4: 8. DOI 10.1186/1471-2466-4-8
http://hdl.handle.net/10230/16428
To cite or link this document: http://hdl.handle.net/10230/16428
dc.contributor.author Fiz, José Antonio
dc.contributor.author Jané, Raimon
dc.contributor.author Torres, Abel
dc.contributor.author Morera, Josep
dc.contributor.author Galdiz, Batxi
dc.contributor.author Gea Guiral, Joaquim
dc.contributor.author Grassino, Alejandro
dc.date.accessioned 2012-05-09T08:42:48Z
dc.date.available 2012-05-09T08:42:48Z
dc.date.issued 2004
dc.identifier.citation Fiz JA, Jané R, Torres A, Morera J, Galdiz B, Gea J, Grassino A. Non-invasive monitoring of diaphragmatic timing by means of surface contact sensors: an experimental study in dogs. BMC Pulm Med. 2004; 4: 8. DOI 10.1186/1471-2466-4-8
dc.identifier.issn 1471-2466
dc.identifier.uri http://hdl.handle.net/10230/16428
dc.description.abstract Background: Non-invasive monitoring of respiratory muscle function is an area of increasing research interest, resulting in the appearance of new monitoring devices, one of these being piezoelectric contact sensors. The present study was designed to test whether the use of piezoelectric contact (non-invasive) sensors could be useful in respiratory monitoring, in particular in measuring the timing of diaphragmatic contraction. Methods: Experiments were performed in an animal model: three pentobarbital anesthetized mongrel dogs. The motion of the thoracic cage was acquired by means of a piezoelectric contact sensor placed on the costal wall. This signal is compared with direct measurements of the diaphragmatic muscle length, made by sonomicrometry. Furthermore, to assess the diaphragmatic function other respiratory signals were acquired: respiratory airflow and transdiaphragmatic pressure. Diaphragm contraction time was estimated with these four signals. Using diaphragm length signal as reference, contraction times estimated with the other three signals were compared with the contraction time estimated with diaphragm length signal. Results: The contraction time estimated with the TM signal tends to give a reading 0.06 seconds lower than the measure made with the DL signal (-0.21 and 0.00 for FL and DP signals, respectively), with a standard deviation of 0.05 seconds (0.08 and 0.06 for FL and DP signals, respectively). Correlation coefficients indicated a close link between time contraction estimated with TM signal and contraction time estimated with DL signal (a Pearson correlation coefficient of 0.98, a reliability coefficient of 0.95, a slope of 1.01 and a Spearman's rank-order coefficient of 0.98). In general, correlation coefficients and mean and standard deviation of the difference were better in the inspiratory load respiratory test than in spontaneous ventilation tests. Conclusion: The technique presented in this work provides a non-invasive method to assess the timing of diaphragmatic contraction in canines, using a piezoelectric contact sensor placed on the costal wall.
dc.language.iso eng
dc.publisher BioMed Central
dc.relation.ispartof BMC Pulm Med. 2004; 4: 8
dc.rights (c) 2004 Fiz et al. Creative Commons Attribution License
dc.rights.uri http://creativecommons.org/licenses/by/2.0/
dc.subject.other Músculs respiratoris
dc.subject.other Diafragma (Anatomia)
dc.title Non-invasive monitoring of diaphragmatic timing by means of surface contact sensors: an experimental study in dogs
dc.type info:eu-repo/semantics/article
dc.identifier.doi http://dx.doi.org/10.1186/1471-2466-4-8
dc.rights.accessRights info:eu-repo/semantics/openAccess
dc.type.version info:eu-repo/semantics/publishedVersion


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