Thank you all for responding! Rudy had another fall last night about 11:30 - no injuries this time. He actually doesn't remember it today. Someone mentioned that he may be having seizures and we are going to ask the onc about that on Monday. I'm also going to ask about inner ear or if they can refer him to a neurologist.
The hospice nurse came out today to meet him and I told her what has been going on. She's baffled too.
My husband said that last night Rudy was sitting in the chair watching TV and his head was leaning to one side and he was drooling. Didn't look like he was sleeping. Prior to this he was getting around pretty well. After, when he went to bed, he had trouble walking again. So I wonder if it is some kind of seizure?
Nova - his blood counts are all normal now. His oxygen is still at 99%, which is amazing!
Hopefully we will get some answers Monday when we see the onc team.
Thanks everyone!