Published mortality rates associated with tummy tuck range from 0.02% to 0.16%. These include all causes of death for one month after surgery, with the most common one being pulmonary embolism (blood clot from legs to lungs). To put this in perspective, the death rate for elective C-section delivery is about 0.02%, with emergency C-sections having a slightly higher risk. Even a normal vaginal delivery has a death rate of 0.0067%, by some estimates.
These statistics may be misleading, however, as recognition of these risks and attempting to minimize them can reduce the likelihood of any complication, including death.
For example, in the 22 years our accredited in-office surgical facility has offered general anesthesia capability, I and one or more partners have performed about 16000 general anesthesia procedures without a single death, heart attack, or stroke. We have experienced a single (proven) blood clot which was not fatal or had any long-term consequence. We now provide active anti-embolism stockings for EVERY patient, not just those with long operations or higher risk factors. I insist on early patient ambulation, which helps keep the blood moving in the patient's extremities, and I see almost all of my surgical patients the day after surgery (yes, even on weekends), which forces them to get up, get ready, and come to the office for recheck. We take care to keep the patient well-hydrated during and after surgery, minimize blood loss with careful technique during surgery, and in general do as many of the things possible that most plastic surgeons do to keep their patients safe.
I personally believe that inpatient hospital care after tummy tuck is a "hidden" risk factor that I avoid with outpatient surgery. My patients are not kept (immobile) in recovery for 2-3 or more hours after inhalation anesthesia, and are not put in a hospital bed with side rails and a button to push if they want a pain shot, a bedpan, or a drink of water. At home, the patient must do these things herself, and the movement and activity helps to prevent blood pooling and stasis that occurs when a patient is (un)safely and comfortably asleep (sedated) in the hospital with all of the sick patients and bad bacteria surrounding her!
So are there risks? Absolutely! Could you be "the one?" Yes. But is it likely? Honestly, in a good place with a good surgeon and staff, not really!