Intra versus extra-thoracic oscillations in chronic obstructive Pulmonary disease (A randomized clinical trial)
Objective: This study was conducted to compare the efficacy of intra versus extra-thoracic oscillations in chronic obstructive pulmonary disease (COPD) patients. Subjects and methods: Sixty male patients with COPD with an age range between 50-60 years were randomly divided into two groups, equal in number. Patients in Group (A) were treated by Oscillatory Positive Expiratory Pressure Quake device and patients in Group (B) were treated by High-frequency chest wall oscillation (HFCWO) vest. The treatment protocol was 30-45 minutes 4 sessions/week for 6 weeks for both groups in addition to COPD medications. All patients were evaluated before and after treatment by spirometry and impulse oscillometry. Results: Pre and Post-study comparison demonstrated that there was a significant improvement in the spirometric indices (FEV1, FVC, FEV1/FVC, and FEF25%-75%) and impulse oscillometry parameters (R5, X5) in both groups. A statistically significant difference was also found between the Quake device and vest HFCWO in most of the measured post-treatment parameters in favor of Quake device. Conclusion: Both intra (Quake) and extra (vest HFCWO) thoracic oscillations have high effectiveness in the treatment of COPD patients by improving the impulse oscillometry parameters and ventilatory function with better results in favor of intrathoracic oscillations (Quake device).
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