Viscoelastic Properties of Bronchial Mucus After Respiratory Physiotherapy in Subjects With Bronchiectasis

Viscoelastic Properties of Bronchial Mucus After Respiratory Physiotherapy in Subjects With Bronchiectasis

Author Ramos, Ercy Mara Cipulo Autor UNIFESP Google Scholar
Ramos, Dionei Google Scholar
Moreira, Graciane Laender Autor UNIFESP Google Scholar
Macchione, Mariangela Google Scholar
Guimaraes, Eliane T. Google Scholar
Rodrigues, Fernanda Maria M. Google Scholar
Souza, Altay Alves Lino de Autor UNIFESP Google Scholar
Saldiva, Paulo Hilário Nascimento Google Scholar
Jardim, Jose Roberto Autor UNIFESP Google Scholar
Institution Univ Estadual Paulista
Universidade de São Paulo (USP)
Universidade Federal de São Paulo (UNIFESP)
Abstract BACKGROUND: Previous studies have evaluated the effectiveness of postural drainage (PD), percussion (PERC), the coughing technique (CT), and other types of coughing in subjects with bronchiectasis. However, the application times of these techniques and the quality of the expectorated mucus require further study. the aim of our study was to evaluate the effectiveness of PD, percussion, CT, and huffing in subjects with bronchiectasis and assess the quantity and quality of bronchial mucus produced (measurement of wet and dry weight and determination of viscoelastic properties). METHODS: Twenty-two subjects with stable bronchiectasis (6 men; mean age: 51.5 y) underwent 4 d of experimental study (CT, PD+CT, PD+PERC+CT, and PD+huffing). the techniques were performed in 3 20-min periods separated by 10 min of rest. Before performing any technique (baseline) and after each period (30, 60, and 90 min), expectorated mucus was collected for analysis of viscoelasticity. RESULTS: A significant increase in the dry weight/wet weight ratio was found after 60 min of PD+PERC+CT (P = .01) and 90 min of PD+huffing (P = .03) and PD+PERC+CT (P = .007) in comparison with CT. PD+PERC+CT and PD+huffing led to the greatest removal of viscoelastic mucus at 60 min (P = .02 and P = .002, respectively) and continued to do so at 90 min (P = .02 and P = .01, respectively) in comparison with CT. An interaction effect was found, as all techniques led to a greater removal of elastic mucus in comparison with CT at 60 min (PD+CT, P = .001; PD+PERC+CT, P < .001; PD+huffing, P < .001), but only PD+PERC+CT and PD+huffing led to a greater removal of elastic mucus than CT at 90 min (P < .001 and P = .005, respectively). CONCLUSIONS: PD+PERC+CT and PD+huffing performed similarly regarding the removal of viscoelastic mucus in 2 and 3 20-min periods separated by 10 min of rest. PD+PERC+CT led to the greatest removal of mucus in the shortest period (2 20-min periods separated by 10 min of rest). (C) 2015 Daedalus Enterprises
Keywords bronchiectasis
mucus
viscosity
elasticity
cough
physical therapy modalities
Language English
Date 2015-05-01
Published in Respiratory Care. Irving: Daedalus Enterprises Inc, v. 60, n. 5, p. 724-730, 2015.
ISSN 0020-1324 (Sherpa/Romeo, impact factor)
Publisher Daedalus Enterprises Inc
Extent 724-730
Origin http://dx.doi.org/10.4187/respcare.02429
Access rights Closed access
Type Article
Web of Science ID WOS:000354192100021
URI http://repositorio.unifesp.br/handle/11600/39095

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