All surgery has some potential risks, including the risks of bleeding, reaction to the anesthetic, and infection. Scars are to be expected, but they will become lighter and flatter with time.
Smoking may increase the risk of complications and delay healing. This could result in larger scars, and a second surgery. You can reduce your risk of complications by closely following Dr. Kremer's instructions before and after the surgery, especially with regard to when and how to resume physical activity.
Abdominoplasty bears a chance of thrombosis and its possible complications even though preventive measures will be undertaken during and after surgery.