dear patient. i understand your problem .clopilet,ecospirin and atorsave do not affect the brain function. Probably you have become a little bit slow because you got little depressed because of heart attack. thinking too much about it can affect your normal brain functioning.The stent used is of very good quality and can last for three years or more in life.That doesnt mean you need another stent as long as the LAD is open and you take your medicines regularly. nobody can say how many stents you need in your lifetime. it depends on the situation at that time. a 2d echo can tell how much is your heart muscle is damaged. but since you underwent succesfull angioplasty,and your blood pressure and heart rate are normal,means the damage was minimal.and your heart has recovered.You need to strictly follow your diet and you will lead a healthy and normal life. hope i have answered your question. have a good day and good health.