Question:medium
According to the GOLD criteria, very severe COPD is defined by:
According to the GOLD criteria, very severe COPD is defined by:
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Very severe means FEV1 below 30 percent predicted with an obstructive ratio.
Updated On: Jun 24, 2026
- FEV1/FVC < 70 and FEV1 < 30
- FEV1/FVC < 70 and FEV1 < 70
- FEV1/FVC < 70 and FEV1 < 50
- Both A and C
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The Correct Option is A
Solution and Explanation
Step 1: COPD is first confirmed by an obstructive ratio, that is post-bronchodilator $\text{FEV}_1/\text{FVC} \lt 0.70$.
Step 2: Once obstruction is confirmed, severity is graded by how low the FEV1 percent predicted falls. The very severe (Stage IV) band sits at $\text{FEV}_1 \lt 30\%$ predicted (or below 50% with respiratory failure).
Step 3: Matching this to the choices, the option giving FEV1/FVC < 70 together with FEV1 < 30 is the defining spirometric statement for very severe disease.
\[\boxed{\text{FEV1/FVC} \lt 70 \text{ and FEV1} \lt 30}\]
Step 2: Once obstruction is confirmed, severity is graded by how low the FEV1 percent predicted falls. The very severe (Stage IV) band sits at $\text{FEV}_1 \lt 30\%$ predicted (or below 50% with respiratory failure).
Step 3: Matching this to the choices, the option giving FEV1/FVC < 70 together with FEV1 < 30 is the defining spirometric statement for very severe disease.
\[\boxed{\text{FEV1/FVC} \lt 70 \text{ and FEV1} \lt 30}\]
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