res sir, i m having severe cough with mild sputum, having previous history of asthmatic symptoms, right now i cant able to breathe properly , i am felling my chest was stiff during inspiration, i done PFT , in that it shows restrictive pattern, in that my fvc was 39% fev1 was 36% and fvc/fev1 ratio was 100% in pre broncho dialator and in post broncho dialator test it shows fvc 62% and fev1 51%. so what to do now, can i use combimist l respules through nebulizer.