Algorithm to diagnose etiology of hypoglycemia after Roux-en-Y gastric bypass for morbid obesity: case series and review of the literature

Most cases of symptomatic hypoglycemia that develop in gastric bypass patients are associated with dietary indiscretions. However, a small subset of patients can develop refractory, recurrent, hyperinsulinemic hypoglycemia from factitious insulin administration or nesidioblastosis.