Work out potassium infusion limit instantly with clear inputs, formula shown and shareable results.
Applies the concentration and rate ceilings for potassium infusion to give the minimum volume and time in which a replacement dose can safely be delivered.
Potassium limits
Minimum volume (mL) = total mmol / concentration limit (mmol/L) x 1000; minimum time (h) = total mmol / rate limit (mmol/h)
Educational estimate only. Not a substitute for professional clinical judgement, and must not be used to make treatment or dosing decisions.
40 mmol/L concentration and 10 mmol/h, though local policy varies.
In life-threatening hypokalaemia with arrhythmia, via central access with continuous ECG monitoring.