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Fructose-induced hyperlactemia in hyperosmolar syndromes
Klinische Wochenschrift
|July 1, 1986
Summary
Hyperosmolar syndromes impair fructose tolerance, leading to severe hyperlactemia during rehydration. Fructose-containing solutions should be avoided in treating these conditions.
Area of Science:
- Metabolic disorders
- Clinical nutrition
- Endocrinology
Background:
- Hyperosmolar syndromes, including hypernatremia and hyperglycemia, present complex rehydration challenges.
- Current rehydration strategies require careful consideration of metabolic responses to infused substances.
Observation:
- Three patients with hyperosmolar syndromes developed severe hyperlactemia (7.9-8.7 mmol/l) during rehydration with 5% fructose.
- Subsequent fructose infusion after electrolyte correction still elevated lactate levels in two patients, suggesting impaired hepatic utilization.
Findings:
- The hyperosmolar state is linked to reduced fructose tolerance, likely due to osmolality-dependent hepatic gluconeogenesis impairment.
- This metabolic dysfunction contributes to hyperlactemia beyond peripheral insulin resistance and reduced muscle glucose uptake.
Implications:
- Fructose-containing infusion solutions are contraindicated in the rehydration therapy of hyperosmolar syndromes.
- Clinical guidelines for managing hyperosmolar states should be updated to exclude fructose-based intravenous fluids.