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Hyperkalemia associated with potassium chloride administration in a cat
1Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Washington State University, Pullman 99164-6610, USA.
Summary
Improperly mixed intravenous potassium chloride can cause dangerous hyperkalemia in cats. Even small amounts injected during IV fluid administration can lead to concentrated potassium discharge, posing a significant risk.
Area of Science:
- Veterinary Medicine
- Clinical Pathology
- Pharmacology
Background:
- Intravenous fluid therapy is common in veterinary medicine.
- Potassium chloride is frequently added to intravenous fluids to correct electrolyte imbalances.
- Hyperkalemia, a dangerous elevation of potassium levels, was observed in a cat receiving IV fluids.
Observation:
- This study investigated if incomplete mixing of potassium chloride in IV fluid bags could be the cause of hyperkalemia.
- Potassium chloride solution was added to 1-L bags of 5% dextrose in water, with and without mixing.
- Fluid was sampled from the administration set during simulated IV administration.
Findings:
- Injecting potassium chloride into IV fluid bags during administration can lead to inadequate mixing.
- Concentrated potassium chloride can be discharged from the administration set.
- Potassium concentrations in the sampled fluid reached up to 194 mEq/L.
Implications:
- This highlights a critical risk factor for iatrogenic hyperkalemia in veterinary patients.
- Careful and thorough mixing of additives in IV fluid bags is essential.
- Veterinarians should be aware of this potential complication during fluid therapy.