Effects of chest wall compression on expiratory flow rates in patients with chronic obstructive pulmonary disease
Braz. j. phys. ther. (Impr.)
;
20(2): 158-165, Mar.-Apr. 2016. tab, graf
Article
in English
| LILACS
| ID: lil-783871
ABSTRACT
Background:
Manual chest wall compression (CWC) during expiration is a technique for removing airway secretions in patients with respiratory disorders. However, there have been no reports about the physiological effects of CWC in patients with chronic obstructive pulmonary disease (COPD).Objective:
To compare the effects of CWC on expiratory flow rates in patients with COPD and asymptomatic controls.Method:
Fourteen subjects were recruited from among patients with COPD who were receiving pulmonary rehabilitation at the University Hospital (COPD group). Fourteen age-matched healthy subjects were also consecutively recruited from the local community (Healthy control group). Airflow and lung volume changes were measured continuously with the subjects lying in supine position during 1 minute of quiet breathing (QB) and during 1 minute of CWC by a physical therapist.Results:
During CWC, both the COPD group and the healthy control group showed significantly higher peak expiratory flow rates (PEFRs) than during QB (mean difference for COPD group 0.14 L/sec, 95% confidence interval (CI) 0.04 to 0.24, p<0.01, mean difference for healthy control group 0.39 L/sec, 95% CI 0.25 to 0.57, p<0.01). In the between-group comparisons, PEFR was significantly higher in the healthy control group than in the COPD group (-0.25 L/sec, 95% CI -0.43 to -0.07, p<0.01). However, the expiratory flow rates at the lung volume at the PEFR during QB and at 50% and 25% of tidal volume during QB increased in the healthy control group (mean difference for healthy control group 0.31 L/sec, 95% CI 0.15 to 0.47, p<0.01 0.31 L/sec, 95% CI 0.15 to 0.47, p<0.01 0.27 L/sec, 95% CI 0.13 to 0.41, p<0.01, respectively) but not in the COPD group (0.05 L/sec, 95% CI -0.01 to 0.12 -0.01 L/sec, 95% CI -0.11 to 0.08 0.02 L/sec, 95% CI -0.05 to 0.90) with the application of CWC.Conclusion:
The effects of chest wall compression on expiratory flow rates was different between COPD patients and asymptomatic controls.
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Peak Expiratory Flow Rate
/
Pulmonary Disease, Chronic Obstructive
/
Thoracic Wall
/
Lung
Type of study:
Practice guideline
Limits:
Humans
Language:
English
Journal:
Braz. j. phys. ther. (Impr.)
Journal subject:
MEDICINA FISICA E REABILITACAO
Year:
2016
Type:
Article
Affiliation country:
Japan
Institution/Affiliation country:
Konan Women's University/JP
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