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Updated: Jun 2, 2026

Roux-en-Y Gastric Bypass Operation in Rats
Published on: June 11, 2012
[Management of hyperinsulinemic hypoglycemia post-gastric bypass surgery]
1Service d'endocrinologie, diabétologie et métabolisme, CHUV, 1011 Lausanne. lucie.favre@chuv.ch
Abstract:
Gastric bypass surgery is an effective treatment for morbid obesity, allowing a substantial weight loss together with an improvement of the cardiovascular and metabolic comorbidities, particularly the glucose control. However, after gastric bypassing, an imbalance between sensitivity and insulin secretion may be observed. This disorder gives rise to hyperinsulinemic hypoglycemia (late dumping syndrome) and is characterized by a dizziness that can be disabling. This problem must be distinguished from conditions provoking similar symptoms, as for instance the early dumping syndrome and the food restriction-related hypoglycemia. Since all these conditions need a particular management, their distinction is essential.
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