Conversation: The conversation between human and AI assistant.
[|Human|] My father has undergone AVR in 2011 and it was successful. But now he is suffering from breathlessness. I had a talk with the doctor who has done the AVR process. He told me as my father was a chain smoker he got some problem in his lungs. However my father gave up his smoking habits around 10 years back.please give me some suggestion.
[|AI|]  Thanks for your question on Chat Doctor. In my opinion we need to rule out cardiac and respiratory causes for your fat fathers breathlessness. Since he was chain smoker we need to rule out COPD (Chronic Obstructive Pulmonary Disease). So get done chest x-ray and PFT (PULMONARY FUNCTION TEST) to rule out COPD. If both are normal, then get done 2D Echo to rule out cardiac cause.  As he is having aortic valve surgery, possibility of complication related to valve can be there. So consult your doctor and discuss all these.