What will be reversible damage?: (A) Fev1 decrease by 50 % by SABA, (B) Fev1 increase by 12% by SABA, (C) Fev1 decrease by 25% by SABA, (D) Fev1 decrease by 5% by SABA
Answer is B. In this question primarily we talking about asthma= We give salbutamol FEV1 becomes Normal Change of FEV1 before & after giving salbutamol (SABA) should be at least 12% to call it Bronchial Asthma.