PFTsExpiration solid · inspiration dashedSynthetic illustration
Cough at night, fine by clinic time
introA 24-year-old with nocturnal cough and chest tightness after exercise. Tested on a symptomatic morning.
Pulmonary function
FEV12.50L68% pred
FVC3.90L92% pred
FEV1/FVC64%
DLCO96% pred
Post-BD FEV1 change+18%
Interpretation here uses the common teaching thresholds (0.70 ratio, 80% predicted); formal reports use lower limits of normal.
Flow-volume loop