It is my experience both back home in the UK and here in the States that once you get past a certain age Doctors don't seem to give a ****, 'Well it's your age' etc. Advocate for your Mom aggressively the more you can learn about her condition and what the 'medical professionals' should be doing, the better. My Father in his late 80's was admitted to hospital with pulmonary edema, they discharged him to a dumping ground hospital on double the dose of the Loop Diuretic he needed when I got there he looked like a corpse. He was old they need the beds so instead of doing what the documentation on the Diuretic said and monitor him they booted him out as medically fit for discharge. Needless to say I was very aggressive in advocating and now my dad is in a good nursing home and very much recovered. He could just have easily been dead, but he's old right? No no f***ing right at all.