PFTsExpiration solid · inspiration dashedSynthetic illustration
Small volumes, healthy lungs
coreA 48-year-old with a BMI of 44 referred for dyspnea on exertion.
Pulmonary function
FEV12.40L72% pred
FVC2.90L70% pred
FEV1/FVC83%
TLC74% pred
RV88% pred
DLCO94% pred
Interpretation here uses the common teaching thresholds (0.70 ratio, 80% predicted); formal reports use lower limits of normal.
Flow-volume loop