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Electrolyte Replacement Planner

Potassium correction & additive calculations

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Replacement Protocol
Hypokalemia Status
--
Enter values to assess
Daily Requirement
-- mEq/day
For maintenance
Max Safe Rate
0.5 mEq/kg/hr
Do not exceed
Calculation Formula
K Gap = Target K - Current K (mEq/L)
Additive = Gap × 0.3 × Weight (conservative)
Hourly Delivery = (Additive × Fluid Rate) ÷ 1000 mL
📋 Potassium Replacement Guidelines
< 2.0 mEq/L Critical - ICU monitoring
2.0 - 2.5 mEq/L Severe - Aggressive Rx
2.5 - 3.0 mEq/L Moderate - Standard Rx
3.0 - 3.5 mEq/L Mild - Diet/fluids
3.5 - 5.5 mEq/L Normal range
💡 Clinical Pearls
  • Never give potassium > 0.5 mEq/kg/hr IV (cardiac arrest risk)
  • Correct magnesium if concurrently low (impairs K repletion)
  • Use concentrated KCl only through central lines
  • Recheck electrolytes q4-6h during aggressive correction