82 years old, had stroke 21 yrs ago,wheelchair bound, lived alone 2 years after dad passed away. memory loss, unable to function with daily care, eating, drinkiing or personal hygiene..sleeps 22 hrs a day. Just had CT and all bloodwork & kidney function checked...no physical illness shows up...
I'd get hospice involved. Nowadays, if you don't, you can find your mom at the hands of the 'health care machine'; getting test after test, scans, studies, and lots of procedures - in other words, torture.
We get old and then we die. That process isn't a disease, it's life. If we're lucky, we get to have a good death. There's a lot standing in the way of that these days.
Hospice takes a clear-headed, big picture look at a person's condition and their quality of life. Sometimes, people improve on hospice and have some real quality time at the end of their lives instead of nearly-daily doctor's office and lab visits.
The final stages of dementia, as exemplified in those with Alzheimer's, mark a difficult transition period in the disease process when individuals have lost virtually all intellectual faculties and show increasing signs of emotional lability. Bedridden, patients with advanced dementia can no longer care for themselves. They barely communicate--using short phrases, mumbles or gestures when doing so--and lose personal awareness. Family caregivers may find the period particularly taxing. In a study published in the "British Medical Journal," researchers at University College in London found that more than half of those looking after a relative with dementia admitted to verbally abusing them.
Mental Deterioration
According to the Alzheimer's Association, dementia breaks down into seven, commonly observed stages. By the last few, patients exhibit profound impairments in short- and long-term memory--to the extent that they might not be able to piece together their own personal history or recognize familiar faces and objects. Coherent speech and language abilities decline. Moreover, personality changes begin to take hold. People with advanced dementia might experience unrelenting depression, have hallucinations (i.e., see, hear or smell things not really present) or have paranoid delusions, believing, for instance, that their spouse is carrying on an affair with a nursing home or hospice attendant. Ultimately, personal identity wastes away.
https://www.agingcare.com/articles/Stages-of-Alzheimers-disease-118964.htm
May peace be with you.