Serum anion gap with optional albumin correction, delta gap and delta ratio.
| Field | Unit | Notes |
|---|---|---|
| Sodium | mmol/L | 120–160 |
| Chloride | mmol/L | 90–120 |
| Bicarbonate | mmol/L | 10–40 |
| Albumin | g/L | Optional, for corrected AG |
Serum anion gap with optional albumin correction, delta gap and delta ratio.
Sodium (mmol/L), Chloride (mmol/L), Bicarbonate (mmol/L), Albumin (g/L).
Albumin-corrected serum calcium using the Payne correction (SI units).
Daily maintenance fluid requirement using the Holliday-Segar method.
Estimates safe sodium-correction rate and fluid replacement for a child with hyponatremia (Na < 135).
Estimates free-water deficit and fluid replacement for a child with hypernatremia (Na > 145).
Adjusts measured serum sodium for the dilutional effect of hyperglycaemia (e.g. in DKA).
Estimates the free-water deficit in a hypernatraemic child, to guide the volume needed to return sodium to 140 mEq/L.
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