Morning Eve,
I am not sure that i am going to be much help here, as each of those situations have multiple causes and "tagging" them all together to form one picture with the information given is nye impossible.
One scenario may well be an old person who has had a cerebrovascular incident possibly with unconsciousness with recurrent infections, septicaemia with multiple organ failure MAY fit the bill, but this is a wild , wild guess and if so, then the "end" would be imminent.