Hello Nirupam, Its been just six months since you have undergone a CABG. Your LVEF is good. Fasting sugar is a little on the higher side. But regarding cardiac enlargement, you need to consult a cardiologist. Your current clinical status, other routine tests will decide on how to go about the further line of action. Undoubtedly you must take a cardiologist's opinion, refer our page to find those suitable for your treatment - Best Cardiologist in India. Hope our answer helps you.