I’m glad you’re on the road to recovery and well enough to be outraged at the poor quality of care given you by this hospital. I’m no lawyer, but it seems to me that the hospital and specific staff (nurse) need to be reported to whatever medical agency supervises them. Living wills/ADs aren’t the guide for the type of nursing care given. If death appears immanent, then they’re consulted. There’s no excuse for the shoddy and endangering “care” given you.
This hospital needs to be reported for medical incompetence and violating your rights. Write down as many details as you and your family can remember, names, timelines, who said what to whom, what was done, not done…
Then get yourself a good lawyer, even if only to properly report the information to the supervisory agency. It has to get the attention of the proper authorities.
If you wish to claim malpractice based upon the lawyer’s advice, it might behoove you to do for the protection of others who might not have advocates to stand up to the doctors.