PFTsExpiration solid · inspiration dashedSynthetic illustration
Sixty pack-years
coreA 71-year-old lifelong smoker with slowly progressive exertional dyspnea. The clinic tests him between exacerbations.
Pulmonary function
FEV11.10L38% pred
FVC3.00L74% pred
FEV1/FVC37%
TLC118% pred
RV168% pred
DLCO52% pred
Post-BD FEV1 change+5%
Interpretation here uses the common teaching thresholds (0.70 ratio, 80% predicted); formal reports use lower limits of normal.
Flow-volume loop