My patients are under general anesthesia for around two hours for a BBL. Some surgeon can take 3-6 hours to do the same procedure. The real rate limiting step with a BBL is the liposuction part. If your surgeon is not in shape, it will take him or her much longer to do the physically demanding part of the surgery. This will increase the actual operating room time and anesthesia time. So find yourself a fit board certified plastic surgeon and get the results you want.
Good luck, and thank you for your question.
Anire Okpaku MD