Emergency Care and Transportation of the Sick and Injured ...

Emphysema and chronic bronchitis are classified as COPD because the pulmonary structure and function changes are chronic, progressive, and irreversible. 3. Asthma is a condition with reversible narrowing of the airway. 4. In obstructive disease, the positive exhalation pressure causes small airways to pinch shut, which traps gas in the alveoli ... ................
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