GOLD 1 COPD corresponds to which FEV1 range?

GOLD 1 COPD corresponds to which FEV1 range?

• A. FEV1 50-79% predicted, moderate limitation.
• B. FEV1 ≥80% predicted, mild airflow limitation.
• C. FEV1 30-49% predicted, severe limitation.
• D. FEV1 <30% predicted, extreme limitation.

Answer: (B)

GOLD staging for COPD uses the percentage of predicted FEV1 after bronchodilator to grade obstruction severity. Mild COPD corresponds to FEV1 being at least 80% of the predicted value. This means lung function is only mildly reduced despite the disease. The other stages are moderate (50–79%), severe (30–49%), and very severe (<30%). Since mild is defined as ≥80% of predicted, that matches the option indicating FEV1 ≥80% predicted.

GOLD staging for COPD uses the percentage of predicted FEV1 after bronchodilator to grade obstruction severity. Mild COPD corresponds to FEV1 being at least 80% of the predicted value. This means lung function is only mildly reduced despite the disease. The other stages are moderate (50–79%), severe (30–49%), and very severe (<30%). Since mild is defined as ≥80% of predicted, that matches the option indicating FEV1 ≥80% predicted.