Despite what one or two of the posts have said here, CATS ARE NOT EVIL! What I see here is that this cat, Oscar KNEW they folks needed a dear one, even if it is a pet, or in this case, him, to be by their side when they were passing. Sadly, not everyone has a human dear one, even one person, by their side when they are passing. At least with Oscar, they do not DIE ALONE.
I used to have a yellow tabby named Oscar, 1981-1994. Died of feline AIDS. He was very unsociable to strangers. Very friendly to me, 2nd best cat I ever had. Oslo, 1994-2009 was the friendliest and was the best.
It occurs to me that the cat may go to where there is a lot of activity from the nursing staff etc. My cats were always looking for attention.