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Efficacy of diaphragmatic breathing in patients with chronic obstructive pulmonary disease.
MedLine Citation:
PMID:  22094449     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
This study investigated the effects of diaphragmatic breathing (DB) on ventilation and breathing pattern, seeking to identify predictors of its efficacy in patients with chronic obstructive pulmonary disease (COPD). Twenty-nine patients with moderate and severe COPD were monitored using respiratory inductance plethysmography and metabolic gas analysis. After 4 minutes of natural breathing, subjects completed 2 minutes of DB followed by 4 minutes of natural breathing. Dyspnea was measured using a visual analogue scale. Diaphragmatic mobility was assessed using chest radiography. DB was associated with a significant increase in tidal volume and reduction in breathing frequency, leading to higher ventilation and oxygen saturation, with a reduction in dead space ventilation and ventilatory equivalent for carbon dioxide. A total of 10 subjects with moderate (5) and severe (5) COPD performed DB with asynchronous thoracoabdominal motion, worsening the dyspnea, and decreasing the gain of tidal volume. Diaphragmatic mobility, inspiratory muscular strength, lower scores for dyspnea and hypoxemia as well as coordinated thoracoabdominal motion are associated with effective DB. In patients with COPD, DB can improve breathing pattern and ventilatory efficiency without causing dyspnea in patients whose respiratory muscular system is preserved.
Authors:
Marcelo Fernandes; Alberto Cukier; Maria Ignêz Zanetti Feltrim
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Chronic respiratory disease     Volume:  8     ISSN:  1479-9731     ISO Abbreviation:  Chron Respir Dis     Publication Date:  2011  
Date Detail:
Created Date:  2011-11-18     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101197408     Medline TA:  Chron Respir Dis     Country:  England    
Other Details:
Languages:  eng     Pagination:  237-44     Citation Subset:  IM    
Affiliation:
1 Physiotherapy Division, Heart Institute, University of São Paulo School of Medicine, São Paulo, Brazil.
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