Thank you for posting your query at DoctorSpring.com
I have noted your grandmother's symptoms, diagnosis and her current clinical condition.
In my opinion, stem cell treatment should not be tried because it has no scientific basis at this point of time. There is no proven benefit and in addition, it can cause severe psychosis and behavioral disturbances. High cost factor is a minor issue, as if the stem cell treatment was beneficial, we would have gone for it anyway.
At this point of time, we should go for standard care, such as use of aspirin (for strokes) and donepezil, memantine, rivastigmine for treating Alzheimer's disease.
I hope it helps.
Please feel free to discuss further,
Dr. Sudhir Kumar MD (Medicine), DM (Neurology)
Senior Consultant Neurologist