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Postprandial reactive hypoglycemia.

J F Brun1, C Fedou, J Mercier

  • 1Service Central de Physiologie Clinique, Centre d'Exploration et de Réadaptation des Anomalies Métaboliques et Musculaires (CERAMM), Lapeyronie Hospital Montpellier, France. drjfbrun@aol.com

Diabetes & Metabolism
|December 19, 2000
PubMed
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Postprandial reactive hypoglycemia (PRH) is diagnosed by symptoms and low blood sugar, not standard tests. Diet is the primary treatment for this condition.

Area of Science:

  • Endocrinology
  • Metabolic Disorders

Background:

  • Postprandial reactive hypoglycemia (PRH) presents with sympathetic and neuroglucopenic symptoms during low blood sugar (<3.3 mmol).
  • Conventional diagnostic tests like the oral glucose tolerance test (OGTT) and mixed meals yield unreliable results for PRH diagnosis.

Purpose of the Study:

  • To highlight the diagnostic challenges and potential causes of postprandial reactive hypoglycemia.
  • To emphasize the need for alternative diagnostic methods and effective management strategies for PRH.

Main Methods:

  • Critique of traditional diagnostic tests (OGTT, mixed meals) for PRH.
  • Advocacy for ambulatory glycemic control or hyperglucidic breakfast tests for accurate diagnosis.
  • Exploration of PRH etiologies including insulin response, renal glycosuria, glucagon response, and insulin sensitivity.

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Main Results:

  • PRH diagnosis requires concurrent symptoms and hypoglycemia; standard tests are unsuitable.
  • Alternative diagnostic approaches like ambulatory glycemic control or hyperglucidic breakfast tests are recommended.
  • Frequent causes of PRH include high insulin sensitivity (50-70%), exaggerated insulin response, renal glycosuria, and impaired glucagon response.

Conclusions:

  • PRH can be linked to adrenergic hormone postprandial syndrome, potentially causing cardiac arrhythmias.
  • High insulin sensitivity, often uncompensated, is a primary driver of PRH, particularly in lean individuals or post-weight reduction.
  • Dietary modifications are the cornerstone of PRH management, with pharmacologic options like alpha-glucosidase inhibitors offering adjunctive benefits.