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Updated: Aug 15, 2026

Improving IV Insulin Administration in a Community Hospital
Published on: June 11, 2012
[Hyperglycemia of the dehydrated infant]
Insights
Acute dehydration from gastroenteritis can cause hyperglycemia, a stress response likely driven by cortisol and inhibited insulin secretion. These glucose levels normalize after rehydration.
Area of Science:
- Endocrinology
- Pediatrics
- Gastroenterology
Context:
- Dehydration, particularly from gastroenteritis, often presents with altered glucose metabolism.
- Hypovolemic shock in children due to diarrhea is a critical condition requiring metabolic assessment.
Purpose:
- To investigate the relationship between hyperglycemia, hormonal responses, and dehydration in children with gastroenteritis.
- To explore the role of cortisol and insulin in stress-induced hyperglycemia during hypovolemic shock.
Summary:
- This study examined 33 children in hypovolemic shock from diarrhea, finding hyperglycemia (serum glucose >140 mg/100 ml) in 41% of patients.
- Hyperglycemic patients exhibited significantly higher plasma cortisol levels compared to those with normal glucose.
- Despite hyperglycemia, insulin levels were not consistently elevated, suggesting a complex endocrine response to stress.
Impact:
- Findings suggest hyperglycemia in this context is a stress response, influenced by cortisol and catecholamines, rather than solely indicative of diabetes.
- Understanding these metabolic disturbances aids in managing dehydration and associated complications in pediatric gastroenteritis.
- Normalization of glucose levels post-rehydration highlights the transient nature of this hyperglycemic state.
Abstract:
Hyperglycemia and glucosuria are frequently seen during the acute phase of dehydration secondary to gastroenteritis. In this paper, 33 patients in hypovolemic shock due to diarrhea were studied. Serum glucose resulted above 140 mg/100 ml. in 14 patients (41%); it was below 27 mg/100 ml. in 2 more patients (5.8%). Despite high glucose concentration, only 4 out of the 14 hyperglycemic patients had serum insulin concentration above that observed in normal fasting children. Plasma cortisol was significantly higher in the group with hyperglycemia (54 +/- 24 micrograms/100 ml.) in comparison with the group with normal glucose levels (15 +/- 6.4 micrograms/100). No correlation was found between serum glucose and the concentrations of sodium, potassium, bicarbonate, growth hormone nor with plasma osmolarity. All disturbances observed turned normal after rehydration. Hyperglicemia is explained as a response to stress and is probably due to the gluconeogenic action of cortisol and the inhibitory effect of catecholamines upon insulin secretion.
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