<s>[INST] My father had a massive heart attack 5 weeks ago. It came on all of a sudden and there were no warning signs. He has a minor one 8 years ago which required 2 stints. This time he had 100% blockage in on artery and 80% in the other. They put more stints in both of those and when he left the hospital his heart was pumping at 30-35%. At his 5 week check up he learned that his heart was worse and only pumping at 20-25% and he has a stationary blood clot in one of his left ventricles. They put him on the blood thinner Coumadin to try to dissolve the clot. He has been wearing a life vest since he was released from the hospital 5 weeks ago. What is his life expectancy? [/INST] When the pumping capacity of heart is 20-25% only, the prognosis is not very good. Further if the clot in is left ventricle is not dissolved, it will further makes things worse. With medical therapy he can survive for 1-2 years. Heart transplantation may help to improve his survival for 5-10 years; However this surgery has got high risk and can be performed only in a few hospitals. </s>