<s>[INST] My grandfather is 89 years old and is in heart failure. The opening in his arotic valve is about the size of a pin hole and he cannot pass blood through it. He has been in and out of the hospital 8 times since december and is in congestive heart failure. When we found out about this 4 years ago, we did not do the surgery because it was too high risk but now we have no choice but to do it. What are the chances of recovery? [/INST] Hello and welcome to health care Magic forum. Thanks for writing in to us with your health concerns. If your grandfather is very frail then you hhave the option of TAVR.It is a percutaneous procedure but very costly right now.If he is not frail then he can withstand surgey easilywith mild risk. </s>