Patients experiencing asthma attacks are often advised to breathe through pursed (puckered) lips. How might this help

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Patients experiencing asthma attacks are often advised to breathe through pursed (puckered) lips. How might this help reduce the symptoms of asthma?
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Holes Human Anatomy and Physiology

ISBN: 978-0078024290

14th edition

Authors: David Shier, Jackie Butler, Ricki Lewis

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