<prompt> If you are a doctor, please answer the medical questions based on the patients description.hello doctor . i m from bangladesh...my father has been suffering from chronic bronchial asthma for 4 years...he used prednisolone, ipraatopium, seretid accuhaler inhaler, salmeterol inhaler, euphyllin.he is 48 years old not diabetic, but hypertensive for 5 years.though using all drugs he is also attackted by asthma everyday.then it is necessary to give 100 o2. now i want to consult you ...if u kindly advice me ...i will grateful to you...with regads- Masum Habib student of MBBS course  <response>: Hello Masum Habit, Thank you for asking at Chat Doctor. I went through your fathers history and would like to make suggestions for him as follows:1. I would like to know in great detail what are his symptoms of asthma, how it was diagnosed, whether he is allergic, what are his nosesinus symptoms, whether he iswas a smoker, his environment, etc. etc.2. Furthermore, I would like to mention here that it is possible that he may need O2 for a severe attack. But it is unusual of asthma to require O2 too often. Thats why I would suggest him spirometry with post-bronchodilator reversibility testing which measures his lung capacity, airway reversibility and response to bronchodilators. Spirometry will also help to identify whether he really has asthma, or COPD or so-called asthma with irreversible obstruction or similar disorders. Spirometry will also help to choose appropriate medications and inhalers for him.3. For him, I would also suggest Chest X-ray as it is unusual for a normal asthmatic patient to require O2 too often. 4. I would like to know about his antihypertensives. Beta-blocker group of antihypertensives can aggravate asthma or bronchoconstriction. So if he is taking beta-blocker group of Chat Doctor. 