Quantitative Evaluation Of The Performance Of Autogenic Drainage In Healthy Adolescents
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QUANTITATIVE EVALUATION OF THE PERFORMANCE OF AUTOGENIC DRAINAGE IN HEALTHY ADOLESCENTS.
Author | : Kimbly M. Morgan |
Publisher | : |
Total Pages | : 0 |
Release | : 2020 |
Genre | : |
ISBN | : |
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INTRODUCTION: Autogenic drainage (AD) is a breathing pattern comprised of 3 phases of tidal volume (Vt) breathing distinguished by low, mid, and high end-expiratory lung volumes (EELV). AD increases FVC and clears clinically significant amounts of sputum. METHODS: AD was defined by EELV as a percent of functional residual capacity (FRC): ≥30% below FRC Phase 1, ±10% at FRC Phase 2, ≥40% above FRC Phase 3, and Vt ±10% of resting Vt. Thirty-two healthy adolescents were taught AD and assessed using spirometry and plethysmography. RESULTS: The mean EELV was 26%, 16%, and 53% of FRC for Phases 1,2,3 (p.001). The mean Vt was 87%, 108%, 138% of Vtrest for Phases 1,2,3 (p.05). All defining criteria were met or were within 1 standard deviation of the defining mean. At least 20% of participants achieved each criterion. CONCLUSION: The AD quantitative definition is achievable in a cohort of healthy adolescents.
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