Hi this is for my Dad. For him angioplasty surgery was done successfully due to artery blockage. But now he has again admitted to hospital due to cough. Doctor told phenomena form is there due to which heart is little weak. So I need answer from cardiologists what further precautions we can take or any higher treatment. Because winter season starts as well. He coughs too much. Doctor gave antibiotics, injection etc. When will he improve? Thanks.