Thanks for your question on HCM. In my opinion you should consult pulmonologist and get done 1. Chest x ray 2. PFT (Pulmonary Function Test) Since you are smoker we need to rule out bronchitis first. So PFT is needed. Chest x ray is needed to rule out any infection like TB present or not. And quit smoking as soon as possible. Chances of MDR TB is very low in your case as you had extra pulmonary (pericardial) TB. MDR in extra pulmonary cases is very low. It is more seen in pulmonary TB patients. So no need to worry about MDR TB.