Question
According to GOLD COPD classification, which of the following is/are correct?
-
FEV₁/FVC < 0.7 and FEV₁ > 80%
-
FEV₁/FVC < 0.7 and FEV₁ > 50% but < 80%
-
FEV₁/FVC < 0.7 and FEV₁ > 40% but < 50%
-
FEV₁/FVC < 0.7 and FEV₁ < 40%
| A. |
1 |
| B. |
1,2 |
| C. |
1,2,3 |
| D. | 2,3,4 |
|
Correct Answer � B Explanation |
 |
According to GOLD (Global Initiative for Chronic Obstructive Lung Disease) classification, COPD is confirmed when post-bronchodilator FEV1/FVC ratio is less than 0.7.
GOLD stages COPD severity based on FEV1 percentage predicted:
GOLD 1 (Mild): FEV1 ≥ 80% predicted and FEV1/FVC < 0.7
GOLD 2 (Moderate): FEV1 between 50% and 79% predicted and FEV1/FVC < 0.7
GOLD 3 (Severe): FEV1 between 30% and 49% predicted, not 40% to 50% as stated in option 3.
GOLD 4 (Very Severe): FEV1 < 30% predicted or FEV1 < 35% with chronic respiratory failure, not simply < 40% as stated in option 4.