@Cestmoi wonderful that you have friends and family to talk to about this terrible experience in your life. That can make a big difference so as to feel cared for again and that life is not just a shocking nightmare that we need to experience alone.
I think that part of these medical traumas may also be the understaffing of hospitals, meaning that nurses and doctors often have so little time and are so stressed themselves that the worst of them comes out, the callousness, the feelings I, you and many others may have had of feeling just like a piece of meat to them. I have a friend who works in a hospital as a radiologist. She talks about something called 'compassion fatigue'. I'm sure working in hospitals is a hard job, all the suffering every day. On reflection I feel that probably most doctors and nurses are there for pretty good decent reasons.
But there always seem to be some who are just awful, pretty much every admission except for a few. And those few can make the experience so awful for people who are sick, fragile, vulnerable, especially if we have mental illness as well. Really, so much more training in mental health is needed in the hospital system.
Mostly I feel medical people in hospitals need much more education about mental illness and the reality of medical traumas. As I see it, the old established hierarchical nature of the hospital system is another source of the problem in itself.
It is a terrible shock when not prepared for what an ordeal hospital can be. My vulnerability in these settings when younger caused me nothing but misery and considerable worsening of mental health. With me the good news is that mostly I do not think about these things all that much now, the healing effects of time lessening the traumatic impact. But I really do have a phobia about hospitals now. Not so great at 58 with more than one lifelong chronic health condition as it's likely I will need hospital admissions again as my age advances. Ongoing fear about that for sure.
My Crohns is now in remission and has been mostly for a long time. But remission in this disease still leaves me with fallout from previous surgeries which, aside from the trauma of the hospital experience itself, were actually the most effective of all treatments for my particular case of Crohns. The seemingly unresolvable problem I have is chronic diarrhea for 40 years. Remission is not being clear of serious symptoms of this disease.
Aside from the awfulness of the experience, the psychological trauma of it, I hope you will heal well from your surgery and that it will prove to be effective for your long term physical health.