Long time nurse who’s also cared for my mother (and MIL/FIL) at home through hospice and passing.
I’m sorry to hear of your father’s situation.
Whether it’s a DTI vs a KTU is a bit of a moot point, really. He’s got something going on, and (it sounds like) he’s dying.
His wish is that he not go into a nursing home.
I’m not so sure you have to move him. It sounds like he’s getting medical (nursing) care where he is. Hospice, at least where I live, means life expectancy is under six months.
So regardless of what type of skin ulcer it is, the likelihood that it will be cured at this point is probably unrealistic.
If it is a KTU, it means that the dying process is advanced, and blood with its healing properties is going to places it’s needed more like the heart and brain. Some experts want to call it ‘skin failure’, just like any other organ failure (as skin is an organ).
If it’s a regular DTI, it means that nutrition is probably poor (dying people don’t want to eat), there could be some moisture there, increased body frailty, and decreased movement off of the area. It might help to make sure he’s turned off that open area frequently so the blood circulation he does have can get to that area. When they lay on it constantly, they lose circulation. Again, it would be difficult to heal it at this point. But they can still keep it clean and keep him as comfortable as possible by turning him side to side using pillows for support. If hospice staff aren’t there that often (usually every two hours or so), then maybe either family/friends can supplement or you could hire someone to stay with him when others aren’t there. Ask the hospice team about it.
I know it’s not an easy thing to do, or deal with. We were fortunate Mom was here with us and were able to keep up with her turning as a family.
If it is a KTU (which I think are pretty rare), things may continue to advance very quickly. Hugs.
https://www.woundsource.com/blog/what-kennedy-terminal-ulcer