Good Morning Bridget:
I will keep your mom in my prayers. As if AD isn't enough, now this. I will pray for both of you.
Bridget, I do not recall whether your mom is seeing a geriatrician? I would feel more comfortable talking to a physician that has experience with older folks; even a specialist in memory problems/dementia/AD. Or call the Alzheimer's Assn hotline and speak to a volunteer that has experience with Alz. Hospitalization can be extremely difficult for Alz patients. They become even more confused and it can bring on some major catastrophic reactions resulting in having to have the patient tied down. My ex-father in law had Alzheimer's and needed an angiogram. The poor guy was ripping his IV out continuously because he was in a constant state of confusion and fear. They found he needed open heart surgery, but it was not performed because of what he would go through during his postoperative phase. They felt that he would become so disoriented and decline so much further so they decided to not do the surgery.
Bridget, I think you need to speak to someone who is an expert in the field of Alzheimer's and find out what his/her opinion is. You will need to know what stage your mom is in too.
Bless you Bridget, I am feeling your pain and indeed I am praying for you and your mom,