🧂 Electrolyte Replacement Reference
Repletion doses, routes and rate ceilings for potassium, magnesium, calcium and phosphate. Browser-side reference.
Electrolyte Replacement Reference
Electrolyte
When to use
Bedside reminder of how much, by what route and how fast to replete each electrolyte. Sodium and free-water deficits are in the dedicated electrolyte tools.
How it works
K: oral 20–40 mmol, IV peripheral ≤ 10 mmol/h. Mg: MgSO4 1–2 g IV. Ca: gluconate 1–2 g IV slow. Phos: 0.08–0.16 mmol/kg over 2–6 h.
Key points
- IV potassium too fast/concentrated risks arrhythmia — respect the ceiling.
- Replace magnesium first; it underlies refractory hypokalaemia/hypocalcaemia.
- Calcium gluconate is preferred over chloride peripherally.
- Watch calcium-phosphate precipitation when co-infusing.
References
Decision support for licensed clinicians only; not a substitute for clinical judgement, diagnosis or local protocols.