Answered by SecondMedic Expert
Gastroenterologist · Bariatric / Weight Reduction Surgery
Gastric bypass surgery is a major procedure that can have numerous long-term complications. The most common complications which may occur years later include:
Vitamin and mineral deficiencies - Malabsorption of important nutrients like calcium, iron, B vitamins, fat-soluble vitamins (A, D, E and K), protein, and carbohydrate can lead to vitamin and mineral deficiencies. To prevent deficiencies after gastric bypass surgery it is important for patients to take daily multivitamins as well as additional supplementation of certain micronutrients such as B12 and zinc when required by their nutritionist or doctor.
Difficulty with food tolerances - Gastric bypass alters the digestive system significantly leading to altered sensitivities when eating certain types of foods or drinks especially high fat or sugary items which have been linked to dumping syndrome for some patients post gastric bypass surgery. Patients should pay special attention to changes in how they tolerate different foods in order to identify potential areas where dietary modifications are necessary for maximum benefit from their weight loss efforts post gastric bypass surgery.
Reoperation rates – while reoperation rates vary slightly between studies they typically range from 9% up 15?pending on indication type of initial procedure used (open vs laparoscopic). Common reasons for needing reoperation include failure to lose/maintain desired weight loss results due mainly secondary issues underlying medical condition gastrointestinal obstruction marginal ulcers anastomotic strictures reflux disease etc..... Complications of revision operations frequently impact quality of life more severely than the original operation itself increasing mortality risks along with length hospital stays amongst other factors making prevention the ideal goal when possible prior performing original procedure..