Which of the following differentiates chronic obstructive pulmonary disease (COPD) from asthma?
A. COPD is an obstructive disease, and asthma is a restrictive disease.
B. The FEV1/FVC ratio is reduced in asthma but not in COPD.
C. Airflow obstruction caused by chronic obstructive pulmonary disease is irreversible, whereas it is reversible in asthma.
D. COPD is characterized by an immunoglobulin E response, whereas asthma involves other mediators

Question

GinnyAnswer · Answer

COPD and asthma are both obstructive lung diseases but differ in that COPD causes irreversible airflow obstruction, while asthma often allows for reversibility with treatment. The FEV1/FVC ratio is reduced in both conditions, but improvements are seen in asthma with bronchodilators. Additionally, asthma is associated with an IgE response, whereas COPD relates more to chronic exposure to irritants. ;

Answered by GinnyAnswer | 2025-07-07

Anonymous · Answer

COPD and asthma are both respiratory conditions but differ significantly in that COPD causes irreversible airflow obstruction, while asthma's obstruction is usually reversible. The FEV1/FVC ratio decreases in both conditions, but can improve with treatment in asthma. Additionally, asthma involves an IgE response related to allergies, while COPD is mainly driven by chronic irritant exposure. 
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