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[Hyperkalemia--life-threatening early complication of asphyxia in premature infants]
A Sychlowy1, H van der Gaag, I Hannen-Hofheinz
1Städtische Kinderklinik Gelsenkirchen.
Insights
Severe electrolyte disturbances, including hyperkalemia and acidosis, are critical in premature infants on mechanical ventilation for hyaline membrane disease. Glucose-insulin infusion is vital for managing hyperkalemia and improving survival rates.
Area of Science:
- Neonatal Medicine
- Pediatric Critical Care
- Biochemistry
Context:
- Premature infants with hyaline membrane disease often require mechanical ventilation.
- Mechanical ventilation can precipitate severe electrolyte disturbances in neonates.
- Hyaline membrane disease management presents complex physiological challenges.
Purpose:
- To report on severe electrolyte disturbances in premature infants with hyaline membrane disease under mechanical ventilation.
- To highlight the critical role of glucose-insulin therapy in managing hyperkalemia.
- To establish immediate treatment protocols for life-threatening arrhythmias.
Summary:
- Sixteen premature infants with hyaline membrane disease on mechanical ventilation experienced severe electrolyte imbalances within 48 hours.
- Elevated serum potassium (>8 mmol/l), decreased calcium (1.0-1.4 mmol/l), and metabolic-respiratory acidosis (pH 6.92-7.19) were prevalent.
- Seven patients developed hyperkalemic cardiac arrhythmia, leading to six deaths; glucose-insulin infusion proved essential for potassium shifting and survival.
Impact:
- Glucose-insulin infusion rapidly reduced serum potassium by 2.9-5.1 mmol/l in 4 hours, proving indispensable for patient survival.
- Immediate administration of calcium gluconate and bicarbonate is crucial for cardiac arrhythmia, followed by glucose-insulin therapy.
- This study underscores the need for vigilant electrolyte monitoring and prompt intervention in critically ill neonates.
Abstract:
16 premature infants with hyaline membrane disease all under mechanical ventilation developed severe electrolyte disturbances during the first 48 hours. The serum potassium concentration increased over 8 mmol/l. After a delay of several hours the serum calcium concentration decreased to 1.0-1.4 mmol/l. The metabolic-respiratory acidosis (pH 6.92-7.19) was present in nearly all patients. The typical hyperkalemic cardiac arrhythmia appeared in 7 patients; six of them died. The quick shifting of potassium from the extracellular into the intracellular space by the glucose-insulin infusion was indispensable for the survival of our patients. The serum potassium concentration decreased by 2.9-5.1 mmol/l in 4 hours. When the cardiac arrhythmia is present calcium gluconate and bicarbonate must be infused immediately followed by the glucose-insulin infusion.