I'll weigh in here and echo Rick's information. I personally would consult an infectious disease specialist for input about potential use of antibiotics now and also prior to undergoing additional surgery to make certain correct antibiotics are prescribed before, during and after procedure to drain infected site. I might also want to get a second opinion from another surgeon.
and i would discuss potential anesthetics to determine ones which interfere with mitochondrial function, and request these not be used if there are other options. did the anesthesist discuss spinal anesthesia or local plus whatever else is used with locals ?
above is what i would do;
best of luck to you! madelyn