I am 77 so my perspective is a little different. I am giving them seven days to make an improvement through treatment. My wife elected to give the doctors just three days. We have both enjoyed a wonderful life and are ready for another transition.

A few months ago while being hospitalized I said no to a ventilator but once I got better and was able to go home from the hospital I told my daughter that I had changed my mind about not wanting to be put on a ventilator because I want to stay here as long as I can if it's the Lord's will.

I second jdbee02.
Don’t treat when there is no reasonable likelihood of improvement. Dialysis treatment gives improvement in quality of life. Don’t foget medical directives only are in effect IF you are unable to make decisions. Talk with family, even pay a lawyer to make sure you have peace of mind. I too am in my mid 50’s and prior to September of 2022 would have said I was in optimal health. Not a thing wrong with me. So being confronted with all this can be overwhelming no matter what, but to those that have no previous health issues it think it is a bit tougher since we have not had to take a look at end of life issues before.

I do have a DNR, and a MOST form.
When I broke my leg 4 years ago this coming Jan. They were shocked I had one.
Those directives DO NOT say don't treat.. it's just if irreversible. Don't.
Like a friend who had cardiac bypass. Wish she'd had one.
In hosp , on vent since July. That's existing.. not living.

I want to get back to a good quality of life.. not just live to lie in bed.
I've seen young pts after a car accident, who have no quality of life.
I know there's life after this.. let me go... BUT u must treat if there's a good chance of recovery.
Talk to yr family, friends, docs.. make an INFORMED decision.