Which of the following is markedly decreased in restrictive lung disease
In restrictive lung diseases,lung volumes are markedly reduced,like TLC,FRC,RV,as well as FVC.FEV1 is also reduced compared with normal values,but is relatively a greater value compared with lung volumes.As a result,FEV1/FVC ratio will be normal or increased in restrictive lung diseases. Reference :Harrison's medicine-18th edition,page no:2093.
FVC
FEV1
FEV1/FVC
RW
Respiratory system