Is it better to have vaginal or abdominal delivery if morbidly obese?

Vaginal. Vaginal delivery is still considered to be the safest option for most mothers depending on the particulars of her pregnancy. Morbidly obese gravidas, for a number of reasons, have about a 30% chance of needing a cesarean section. The good news is that 70% will deliver successfully vaginally.
Vaginal. The risks of complications from major abdominal surgery (c-section) increase with obesity. These include surgical complications, wound healing, infection, blood loss, blood clots (thrombosis), even death compared to a vaginal delivery.