After she had her final stroke, she was unconscious, and my sisters and I sat with her until she died, which was a week after the stroke. About 24 hours before she died, she started to moan with each exhallation. A nurse came in and put a pain patch on her, and the moaning ceased after about an hour. She died early the next morning. This was what my mom wanted so we acceded to her wish. However, she clearly dehydrated over the last week, and it was NOT painless. I was there, and I know.
Thank you for sharing your experience. May your Mother rest in peace.
Another article with someone else's story:
A "Painless" Death?
http://www.catholiceducation.org/articles/medical_ethics/me0074.html