Linear and nonlinear analysis of base lung sound in extrinsic allergic alveolitis patients in comparison to healthy subjects.
Objective: Pulmonary disorders are frequently characterized by the presence of adventitious sounds added to the breathing or base lung sound (BLS). The aim of this work was to assess the features of BLS in extrinsic allergic alveolitis (EAA) patients in comparison to healthy subjects, applying linea...
| Publicado en: | Methods of Information in Medicine Vol. 52; no. 2; pp. 266 - 277 |
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| Autores principales: | , , , , , |
| Formato: | research Journal Article |
| Publicado: |
Thieme Medical Publishing Inc.
2013
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=107903926&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 107903926 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 00261270 W7M jtl: Methods of Information in Medicine issn: 00261270 maglogo: N pubinfo: dt: 2013 vid: 52 iid: 2 pid: 2811 pub: Thieme Medical Publishing Inc. place: New York, New York artinfo: ui: 107903926 107903926 NLM23591730 2012112253 10.3414/ME12-01-0037 NLM23591730 107903926 ppf: 266 ppct: 11 formats: tig: atl: Linear and nonlinear analysis of base lung sound in extrinsic allergic alveolitis patients in comparison to healthy subjects. aug: au: Charleston-Villalobos, S Albuerne-Sanchez, L Gonzalez-Camarena, R Mejia-Avila, M Carrillo-Rodriguez, G Aljama-Corrales, T affil: Health Science Department, Universidad Autonoma Metropolitana, Mexico City, Mexico. schv@xanum.uam.mx sug: subj: Alveolitis, Extrinsic Allergic Physiopathology Monitoring, Physiologic Statistics and Numerical Data Respiratory Sounds Diagnosis Respiratory Sounds Physiopathology Aged Female Human Linear Regression Mexico Middle Age Monitoring, Physiologic Equipment and Supplies Chaos Theory Aged: 65+ years Middle Aged: 45-64 years Female ab: Objective: Pulmonary disorders are frequently characterized by the presence of adventitious sounds added to the breathing or base lung sound (BLS). The aim of this work was to assess the features of BLS in extrinsic allergic alveolitis (EAA) patients in comparison to healthy subjects, applying linear and nonlinear analysis techniques.Methods: We investigated the multichannel lung sounds on the posterior chest of 16 females, 8 healthy and 8 EAA patients, when breathing at 1.5 L/s. BLS linear features were obtained from the power spectral density (PSD) while nonlinear features were extracted by the concepts of irregularity and complexity, i.e., spectral, sample and multiscale entropy.Results: The results demonstrated that spectral percentiles of BLS were lower in EAA patients than in healthy subjects but statistical significance (p<0.05) was obtained only for expiration at the left apical and both basal regions. Also, the maximum amplitude of the PSD in patients reached statistical significance ( p < 0.05) for the expiratory phase at basal regions. In the case of nonlinear techniques, significant lower values ( p < 0.05) were obtained for EAA patients during both respiratory phases at left apical and both basal regions.Conclusion: In conclusion, we found that BLS in chronic EAA patients is characterized by lower spectral percentiles, lower irregularity and lower complexity than in healthy subjects suggesting the feasibility of its clinical usefulness by screening its temporal alteration. pubtype: Academic Journal doctype: research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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