PFTsExpiration solid · inspiration dashedSynthetic illustration
A box where a loop should be
advancedA 66-year-old with a large retrosternal goiter and positional noisy breathing.
Pulmonary function
FEV12.00L64% pred
FVC3.40L86% pred
FEV1/FVC59%
DLCO90% pred
Interpretation here uses the common teaching thresholds (0.70 ratio, 80% predicted); formal reports use lower limits of normal.
Flow-volume loop