Faculty Information |
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Article types | Original article |
Language | English |
Refereed paper | Refereed |
Title | Effects of chest wall compression on expiratory flow rates in patients with chronic obstructive pulmonary disease. |
Journal | Formal name:Brazilian journal of physical therapy Abbreviation:Braz J Phys Ther ISSN code:1809-9246(Electronic)1413-3555(Linking) |
Domestic / Foregin | Foregin |
Volume, Number, Page | 20(2),pp.158-65 |
Papers・Author | Nozoe Masafumi, Mase Kyoshi, Ogino Tomoyuki, Murakami Shigefumi, Takashima Sachie, Domen Kazuhisa |
Publication date | 2016/03 |
Papers・Description | 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. |
DOI | 10.1590/bjpt-rbf.2014.0145 |
PMID | 26982453 |