Sir recently my grandad expired in hospital. Basically to say my grandad was a fit person and never missed his tablets. But he already had heart problem. According to doctors explanation they say that my grandad was developing blockages in veins. Because of his past incidents his 3 veins were blocked and he lived for 15 years in 1 vein. Morning he had to attend a wedding he was already and while climbing the steps he got pain and he stepped back and came back to his bedroom. He used to tell from a week that his legs are paining a lot. So my uncle m admitted him the hospital said they would discharge him n in 3 hrs but later his bp started to dicorate so they did angiography after it he got unconscious and his bp got low and they said he was unable to bypass the clots in his leg. My question is why couldn't they do angioblast to remove clots?