The following pulmonary function results were obtained on a patient with COPD: Measured Predicted
FEV₁1.0 L 4.0 L
FVC 3.5 L 5.0 L
The results are consistent with _____ obstruction.

Question

Quizplus · Accepted Answer

The FEV1/FVC ratio is significantly reduced (1.0/3.5 = 0.29), indicating a very severe obstruction according to the GOLD criteria for COPD, where a very severe obstruction is characterized by an FEV1/FVC ratio less than 0.70 and an FEV1 less than 30% of the predicted value.

The Following Pulmonary Function Results Were Obtained on a Patient