question: My mother 68 years of age has had both corotid arteries cleaned out the right side closed up with scar tissue and they wont go back in due to the fact that they say it could be fatal.  The left side they put a stent in.  Her MRI shows that she has had a very mild stroke we see no lingering effects.  Now, she is having high blood pressure problems for the past week. She has always had very low blood pressure.  She went yesterday for a test to see if the left side where the stent is is still working.  I guess my question is that if the stent is no longer working what is the next step?