Work out bicarbonate deficit instantly with clear inputs, formula shown and shareable results.
Multiplies the bicarbonate distribution space by body weight and the bicarbonate gap to estimate the millimoles needed for full or half correction.
Bicarbonate deficit
Deficit (mmol) = distribution factor x weight (kg) x (target HCO3 - measured HCO3), factor 0.4-0.5 rising in severe acidaemia
Educational estimate only. Not a substitute for professional clinical judgement, and must not be used to make treatment or dosing decisions.
Half correction limits the risk of overshoot alkalosis, hypokalaemia and paradoxical intracellular acidosis.
Yes. The apparent space widens as bicarbonate falls, so factors up to 0.8 are used in severe acidaemia.