Dear friend, welcome to HCM !
At 89 years age and with
dementia, swelling over the belly and lower limbs and breathlessness could be
due to heaert failure, renal (
kidney) failure, Low proteins, sometimes
liver cell failure (usually with
jaundice), low grade infections etc..
Does she have fever, vomitting, swelling over the face , more in the morning?
Are there any infected bed sores / wounds etc?
She will ahve to undergo physical examination, tests like CBC, routine labs , EKG, Xray chest, urine routine, 2D echo etc. to pinpoint the cause.
Only on above testing can we conclude about
heart failure.
Take care and please keep me informed of your progress.
Good Luck !
I hope to have answered your query satisfactorily.
May I request for your rating and review of this answer before you accept the answer and close the query (if there are no more follow up questions)?
Thank you !