All the following are true about obstructive lung disease except
Diffusion capacity is decreased in restrivtive lung disease.decreased in expiratory flow rate is a hallmark of obstructive lung disease. Residual volume is increased & FEV1/FVC is decresde Ref Harrison 19th edition pg 1661
Decreased FeV1
Decreased MEFR
Increased RV
Increased diffusion capacity
Respiratory system