Acid-base and electrolytes
10 of 142 calculators
- K / Mg / PhosPotassium, magnesium, and phosphate replacementDose ranges by serum level for adult IV or oral replacement, with infusion limits.
- pH (H-H)Henderson-Hasselbalch (pH from HCO₃ and PaCO₂)Calculates pH, or checks a blood gas for internal consistency.
- AGAnion gap (with albumin correction)Serum anion gap, albumin-corrected gap, and delta-delta ratio.
- Winter'sWinter's formula (expected PaCO₂)Checks respiratory compensation in metabolic acidosis.
- HCO₃ deficitSodium bicarbonate deficitEstimated bicarbonate needed to raise serum HCO₃ to a target.
- Ca corrCorrected calcium (albumin)Albumin-adjusted total calcium.
- FENaFractional excretion of sodium (FENa)Separates prerenal from intrinsic acute kidney injury.
- FEUreaFractional excretion of urea (FEUrea)Prerenal versus intrinsic AKI when the patient has received diuretics.
- FEKFractional excretion of potassium (FEK)Percent of filtered potassium excreted in urine.
- TTKGTranstubular potassium gradient (TTKG)Estimates potassium secretion in the cortical collecting duct.
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