Like any surgical procedure, a gastrojejunostomy could result in infection or another complication. A gastrojejunostomy connects the stomach to the jejunum, bypassing the duodenum, the beginning of the intestine at the bottom of this image.
One more thing: Don't make your turtle's water temperature too warm. For most adult aquatic turtle species, 78 F. (25.5 C.) is the highest you want unless you're treating them for an illness and a veterinarian has told you to raise the temperature. Otherwise, too-warm water can encourage bacteria growth in the tank. It also discourages turtles from basking sometimes.
use an aquarium no smaller than 15 gallons for HATCHLINGS. 1 adult YBS should be kept in a 60gallon aquarium and up. Add an additional 20 gallons per turtle. Use a good filtration system, preferably an external canister filter. These turtles like to bask, so provide a fair sized basking spot. I would also recommend a submersible heater with the temperature adjusted to 75 to 80 degrees.