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Analysis of diaphragmatic movement before and after pulmonary rehabilitation using fluoroscopy imaging in patients with COPD

Authors Chun EM, Han SJ, Modi HN

Received 16 September 2014

Accepted for publication 1 December 2014

Published 27 January 2015 Volume 2015:10(1) Pages 193—199

DOI https://doi.org/10.2147/COPD.S74438

Checked for plagiarism Yes

Review by Single-blind

Peer reviewer comments 3

Editor who approved publication: Dr Richard Russell

Eun Mi Chun,1 Soo Jeong Han,2 Hitesh N Modi3

1Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul, Republic of Korea; 2Rehabilitation Medicine, Ewha Womans University School of Medicine, Seoul, Republic of Korea; 3Scoliosis Research Institute, Department of Orthopedics, Korea University Guro Hospital, Seoul, Republic of Korea

Background: The diaphragm is the principal inspiratory muscle. The purpose of this study was to assess improvements in diaphragmatic movement before and after pulmonary rehabilitation in patients with chronic obstructive pulmonary disease (COPD), using a fluoroscopy-guided chest X-ray.
Patients and methods: Among 117 patients with COPD receiving pulmonary rehabilitation who underwent the initial fluoroscopy-guided chest X-ray and pulmonary function test, 37 of those patients who underwent both initial and follow-up fluoroscopy and pulmonary function tests were enrolled in this study. After hospital education, participants received pulmonary rehabilitation through regular home-based training for at least 3 months by the same physiatrist. We assessed the changes in diaphragm area with fluoroscopy-guided posteroanterior chest X-rays between pre- and postpulmonary rehabilitation. To minimize radiation hazards for subjects, the exposure time for fluoroscopy to take chest X-rays was limited to less than 5 seconds.
Results: There were significant improvements (2,022.8±1,548.3 mm² to 3,010.7±1,495.6 mm² and 2,382.4±1,475.9 mm² to 3,315.9±1,883.5 mm²; right side P=0.001 and left side P=0.019, respectively) in diaphragmatic motion area during full inspiration and expiration in both lungs after pulmonary rehabilitation. Pulmonary function tests showed no statistically significant difference between pre- and postpulmonary rehabilitation.
Conclusion: The study suggests that the strategy to assess diaphragm movement using fluoroscopy is a relatively effective tool for the evaluation of pulmonary rehabilitation in COPD patients in terms of cost and time savings compared with computed tomography or magnetic resonance imaging.

Keywords:
COPD, pulmonary rehabilitation, fluoroscopy, diaphragmatic movement

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