Detecting unilateral phrenic paralysis by acoustic respiratory analysis

The consequences of phrenic nerve paralysis vary from a considerable reduction in respiratory function to an apparently normal state. Acoustic analysis of lung sound intensity (LSI) could be an indirect non-invasive measurement of respiratory muscle function, comparing activity on the two sides of t...

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Detalles Bibliográficos
Autores: Fiz, José Antonio, Jané Campos, Raimon|||0000-0002-6541-8729, Lozano, Manuel, Gomez, Rosa, Ruiz, Juan
Tipo de recurso: artículo
Fecha de publicación:2014
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/23668
Acceso en línea:https://hdl.handle.net/2117/23668
https://dx.doi.org/10.1371/journal.pone.0093595
Access Level:acceso abierto
Palabra clave:Phrenology
Respiratory sounds
Frenologia
Respiració -- Mesurament
Àrees temàtiques de la UPC::Enginyeria biomèdica::Electrònica biomèdica
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spelling Detecting unilateral phrenic paralysis by acoustic respiratory analysisFiz, José AntonioJané Campos, Raimon|||0000-0002-6541-8729Lozano, ManuelGomez, RosaRuiz, JuanPhrenologyRespiratory soundsFrenologiaRespiració -- MesuramentÀrees temàtiques de la UPC::Enginyeria biomèdica::Electrònica biomèdicaThe consequences of phrenic nerve paralysis vary from a considerable reduction in respiratory function to an apparently normal state. Acoustic analysis of lung sound intensity (LSI) could be an indirect non-invasive measurement of respiratory muscle function, comparing activity on the two sides of the thoracic cage. Lung sounds and airflow were recorded in ten males with unilateral phrenic paralysis and ten healthy subjects (5 men/5 women), during progressive increasing airflow maneuvers. Subjects were in sitting position and two acoustic sensors were placed on their back, on the left and right sides. LSI was determined from 1.2 to 2.4 L/s between 70 and 2000 Hz. LSI was significantly greater on the normal (19.3±4.0 dB) than the affected (5.7±3.5 dB) side in all patients (p = 0.0002), differences ranging from 9.9 to 21.3 dB (13.5±3.5 dB). In the healthy subjects, the LSI was similar on both left (15.1±6.3 dB) and right (17.4±5.7 dB) sides (p = 0.2730), differences ranging from 0.4 to 4.6 dB (2.3±1.6 dB). There was a positive linear relationship between the LSI and the airflow, with clear differences between the slope of patients (about 5 dB/L/s) and healthy subjects (about 10 dB/L/s). Furthermore, the LSI from the affected side of patients was close to the background noise level, at low airflows. As the airflow increases, the LSI from the affected side did also increase, but never reached the levels seen in healthy subjects. Moreover, the difference in LSI between healthy and paralyzed sides was higher in patients with lower FEV1 (%). The acoustic analysis of LSI is a relevant non-invasive technique to assess respiratory function. This method could reinforce the reliability of the diagnosis of unilateral phrenic paralysis, as well as the monitoring of these patients.Peer Reviewed20142014-04-0920142014-08-01journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/23668https://dx.doi.org/10.1371/journal.pone.009359524718599reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/236682026-05-27T15:37:01Z
dc.title.none.fl_str_mv Detecting unilateral phrenic paralysis by acoustic respiratory analysis
title Detecting unilateral phrenic paralysis by acoustic respiratory analysis
spellingShingle Detecting unilateral phrenic paralysis by acoustic respiratory analysis
Fiz, José Antonio
Phrenology
Respiratory sounds
Frenologia
Respiració -- Mesurament
Àrees temàtiques de la UPC::Enginyeria biomèdica::Electrònica biomèdica
title_short Detecting unilateral phrenic paralysis by acoustic respiratory analysis
title_full Detecting unilateral phrenic paralysis by acoustic respiratory analysis
title_fullStr Detecting unilateral phrenic paralysis by acoustic respiratory analysis
title_full_unstemmed Detecting unilateral phrenic paralysis by acoustic respiratory analysis
title_sort Detecting unilateral phrenic paralysis by acoustic respiratory analysis
dc.creator.none.fl_str_mv Fiz, José Antonio
Jané Campos, Raimon|||0000-0002-6541-8729
Lozano, Manuel
Gomez, Rosa
Ruiz, Juan
author Fiz, José Antonio
author_facet Fiz, José Antonio
Jané Campos, Raimon|||0000-0002-6541-8729
Lozano, Manuel
Gomez, Rosa
Ruiz, Juan
author_role author
author2 Jané Campos, Raimon|||0000-0002-6541-8729
Lozano, Manuel
Gomez, Rosa
Ruiz, Juan
author2_role author
author
author
author
dc.subject.none.fl_str_mv Phrenology
Respiratory sounds
Frenologia
Respiració -- Mesurament
Àrees temàtiques de la UPC::Enginyeria biomèdica::Electrònica biomèdica
topic Phrenology
Respiratory sounds
Frenologia
Respiració -- Mesurament
Àrees temàtiques de la UPC::Enginyeria biomèdica::Electrònica biomèdica
description The consequences of phrenic nerve paralysis vary from a considerable reduction in respiratory function to an apparently normal state. Acoustic analysis of lung sound intensity (LSI) could be an indirect non-invasive measurement of respiratory muscle function, comparing activity on the two sides of the thoracic cage. Lung sounds and airflow were recorded in ten males with unilateral phrenic paralysis and ten healthy subjects (5 men/5 women), during progressive increasing airflow maneuvers. Subjects were in sitting position and two acoustic sensors were placed on their back, on the left and right sides. LSI was determined from 1.2 to 2.4 L/s between 70 and 2000 Hz. LSI was significantly greater on the normal (19.3±4.0 dB) than the affected (5.7±3.5 dB) side in all patients (p = 0.0002), differences ranging from 9.9 to 21.3 dB (13.5±3.5 dB). In the healthy subjects, the LSI was similar on both left (15.1±6.3 dB) and right (17.4±5.7 dB) sides (p = 0.2730), differences ranging from 0.4 to 4.6 dB (2.3±1.6 dB). There was a positive linear relationship between the LSI and the airflow, with clear differences between the slope of patients (about 5 dB/L/s) and healthy subjects (about 10 dB/L/s). Furthermore, the LSI from the affected side of patients was close to the background noise level, at low airflows. As the airflow increases, the LSI from the affected side did also increase, but never reached the levels seen in healthy subjects. Moreover, the difference in LSI between healthy and paralyzed sides was higher in patients with lower FEV1 (%). The acoustic analysis of LSI is a relevant non-invasive technique to assess respiratory function. This method could reinforce the reliability of the diagnosis of unilateral phrenic paralysis, as well as the monitoring of these patients.
publishDate 2014
dc.date.none.fl_str_mv 2014
2014-04-09
2014
2014-08-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/23668
https://dx.doi.org/10.1371/journal.pone.0093595
24718599
url https://hdl.handle.net/2117/23668
https://dx.doi.org/10.1371/journal.pone.0093595
identifier_str_mv 24718599
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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