What is true for restrictive lung disease?
In Restrictive lung disease, parenchymal involvement will lead to pulmonary fibrosis and hence it will be difficult to inflate the lung leading to the reduction in lung compliance. The FEV1/ FVC ratio is increased in restrictive lung disease because the numerator and denominator in the ratio are both reduced in restrictive lung disease, with FVC decreasing dispropoionately.
FEV1/FVC decreased, compliance normal
FEV1/FVC increased, compliance increased
FEV1/FVC decreased, compliance increased
FEV1/FVC increased, compliance decreased
Flow Volume curve, Spirometry and DLCO