My Mother Is Diagnosed With Alzheimer's, She Has No Blood

My mother is diagnosed with Alzheimer's, she has no blood pumping into her feet she has an aunurisim in groin size close to 5 they want to put a stent? To get blood flowing back to feet. Is her body shutting down. She's had Alzheimer's for almost 4-5 years now. What should I expect and be prepared for?