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Diagnosis and Treatment > Medication > Acarbose

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Xin Chen Division of Internal Medicine, LAC+USC Medical Center, University of Southern California, Los Angeles, California, USA

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Dina Kamel Division of Endocrinology, Diabetes, and Metabolism, Keck School of Medicine, LAC+USC Medical Center, University of Southern California, Los Angeles, California, USA

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Braden Barnett Division of Endocrinology, Diabetes, and Metabolism, Keck School of Medicine, LAC+USC Medical Center, University of Southern California, Los Angeles, California, USA

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Evan Yung Division of Pathology, LAC+USC Medical Center, University of Southern California, Los Angeles, California, USA

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Adrienne Quinn Keck School of Medicine, University of Southern California, Los Angeles, California, USA

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Caroline Nguyen Division of Endocrinology, Diabetes, and Metabolism, Keck School of Medicine, LAC+USC Medical Center, University of Southern California, Los Angeles, California, USA

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Summary

There has been an increasing awareness of post gastric bypass hypoglycemia (PGBH). Histopathologic findings from such patients who underwent partial/total pancreatomy, however, can vary widely from minimal changes to classic nesidioblastosis, making the pathologic diagnosis challenging. PGBH typically presents as postprandial hypoglycemia, as opposed to insulinoma, which presents as fasting hypoglycemia. Herein, we describe an unusual case of a patient with PGBH who initially presented with postprandial hypoglycemia three years after surgery, but later developed fasting hyperinsulinemic hypoglycemia as the disease progressed. Our hypothesis for this phenomenon is that this disease is progressive, and later in its course, the insulin release becomes dissociated from food stimulation and is increased at baseline. Future studies are needed to investigate the prevalence as well as etiology of this progression from postprandial to fasting hypoglycemia.

Learning points:

  • There has been an increasing awareness of post gastric bypass hypoglycemia (PGBH).

  • Histopathologically, PGBH can vary from minimal changes to nesidioblastosis.

  • Although uncommon, patients with PGBH after Roux-en-Y gastric bypass may present with both postprandial and fasting hyperinsulinemic hypoglycemia as disease progresses.

  • Our hypothesis for this phenomenon is that the insulin release becomes dissociated from food stimulation and is increased at baseline with disease progression.

Taxonomy:
Clinical Overview, Gland/Organ, Pancreas, Topic, Obesity, Hormone, Insulin, Condition/ Syndrome, Hyperinsulinaemic hypoglycaemia, Hypoglycaemia, Iatrogenic disorder, Post-prandial hypoglycaemia, Patient Demographics, Age, Adult, Gender, Female, Ethnicity, White, Country of Treatment, United States, Diagnosis and Treatment, Signs and Symptoms, Dizziness, Hyperhidrosis, Hyperinsulinaemia, Hypoglycaemia, Syncope, Tremulousness, Investigation, C-peptide (blood), Glucose (blood), Glucose (blood, fasting), Haematoxylin and eosin staining, Histopathology, Immunohistochemistry, Insulin, Intervention, Bariatric surgery, Diet, Pancreatectomy, Medication, Acarbose, Alpha-glucosidase inhibitors, Diazoxide, Octreotide, Somatostatin analogues, Publication Details, Case Report Type, Unique/unexpected symptoms or presentations of a disease
DOI:
https://doi.org/10.1530/EDM-18-0089
Volume/Issue:
Volume 2018: Issue 1
Open access