My father faced a heart attack few months back then doctors installed a metal stun in his heart. Few months passed. One day he was having fever and we found phemonia captured my father. His one lung was collapsed and lots of fuild was taken out of his lung. Now my father is under medication at home. My father is having swelling in his feets and He cant able to eat food. Doctors says there is a very little problem in his liver. please give us your opinion and what kind of food diet he should go for.