Yes, my mother was in a nursing home until she died at 102. Several doctors warned me that CPR would almost certainly break some ribs, because at her age they were very brittle.
I wanted to be careful about taking advice, because some of the doctors I met when she went into the hospital from time to time frankly just wanted to kill these very old patients and just get them out of the way, and I had to refuse their suggestions every time my mother went into the hospital with pneumonia or something similar.
But I did finally agree, no CPR, although I made it clear that they should use normal care such as oxygen mask, intravenous feeding if she couldn’t keep food down, antibiotics, and so forth, when called for.
The important thing is whether you can trust the nurses and doctors in charge. I was fortunate to have put her in a really good Catholic nursing home. And the hospital doctors were constantly trying to persuade me to hurry her death, but at least they never did anything on their own when I refused.
They will become more insistent, more challenging, if the Obama "worm meme" of "death to the useless eaters!" is successful in eating through the moral substance, what's left of it, of the American Republic and its civilized Western view of life.
It really is a culture of death.