Dad In Hospital

I received a phone call from the nursing home saying
dad was ill. Not eating, vomiting, temperature up.
She asked if I wanted to send him to hospital or keep
him "comfortable" and they would administer antibiotics.
Uh, Hospital  !
What the heck do they mean "keep him comfortable"?
to die?
He is in the ICU with sepsis, heart fibrillations,
lungs full of mucus, bladder infection.
My sister had seen him three days before and i had
spoken to him on the phone then also but
I guess we didn't pick up on it.
My sister,bf and I visited today and
he was doing better.
May be being moved out of ICU tomorrow.