The post surgery effects of general anesthesia are grossly underestimated. My oncologist acquaintance says he would not ride in a car, get surgery from or even have his taxes done by a person who had major surgery under a general anesthetic in the past month.
I can believe it. I had an operation about six years ago and didn’t feel 100% mentally for at least a few weeks, though I returned to light-duty work after two weeks.