Say you’re having major surgery, like installing some new ribs, and half way through the surgery, while your chest is wide open, the surgeon just leaves. Like he just decides to go home and leave you there.
Eventually you’ll wake up, right? You’ll wake up with your chest open, probably in a lot of pain.
Would you die? If you manage to stay calm and just lie there patiently, how long could you survive? Besides something like an infection, what would be the things that could kill you in that situation?
The OR staff will make sure someone else comes in to close you up. Surgeries aren’t done alone by the surgeon.
The anesthesiologist will not just let you wake up like that.
Unless you’re having a backyard surgery done by some wack job, this will never happen.