Thank you for the question.
Although I am not aware of exact percentages, I believe that most plastic surgeons will perform any type of tummy tuck surgery under general anesthesia. In my practice, all tummy tuck surgery is done in a fully accredited surgery center under the supervision of well experienced board-certified anesthesiologists.
Safety is the first concern with any type of surgery. In my opinion, placing a patient in the prone position without “protecting the airway” with an endotracheal tube, is not good practice. This prone position is necessary to perform the “circumferential tummy tuck” procedure.
I would suggest that you check the training and certification of your plastic surgeon carefully; make sure that he/she is certified by the American Board of plastic surgery.
I hope this helps