@msolga,
Yep, after saying my goodbyes and I love yous for a couple of days before, I spent the last 24 hours of my dad's life by his hospital bed holding his hand, telling him repeatedly that it was okay for him to finally just let go, that he'd suffered enough and would no longer have to endure the torturous pain.
To this day I'm not sure if he died on his own or if the nurses kept increasing his meds in an attempt to keep him comfortably in a drug induced coma and hasten the end. When he finally did go quietly the next morning, it was a great sense of loss, relief and guilt that I couldn't do more to help him. Not sure what I would have done if it had lasted for weeks and months rather than just 24 hours.