Anion gap = Na – (Cl + HCO3-)
Corrected anion gap, mEq/L = Anion gap, mEq/L + [ 2.5 × (4 – albumin, g/dL) ]
Delta gap = Anion gap – 12 (normal anion gap)
Bicarbonate deficit = 0.4 × body weight in kg × (24 – bicarbonate level)
Calculated serum osmolality = 2 (Na) + Urea + Glucose
Normal = 280 - 300 mmol/l
Fractional Excretion of Sodium (FENa)% = 100 × (SCr × UNa ) / (SNa × UCr)
Maintenance fluids, calculated using the “4-2-1” Rule:
For 0-10 kg: + 4 mL/kg/hr
For 10-20 kg: + 2 mL/kg/hr
For >20 kg: + 1 mL/kg/hr
Corrected Sodium (Hillier, 1999) = Measured sodium + 0.024 * (Serum glucose - 100)
Corrected Calcium = (0.8 * (Normal Albumin - Pt's Albumin)) + Serum Ca
Free Water Deficit in Hypernatremia
FW Deficit (Adult Male) = 0.6 x weight (kg) x (current NA / 140-1)
FW Deficit (Adult Female) = 0.5 x weight (kg) x (current NA / 140-1)
FW Deficit (Elderly Male) = 0.5 x weight (kg) x (current NA / 140-1)
FW Deficit (Elderly Female) = 0.45 x weight (kg) x (current NA / 140-1)
FW Deficit (Child) = 0.6 x weight (kg) x (current NA / 140-1)
Corrected anion gap, mEq/L = Anion gap, mEq/L + [ 2.5 × (4 – albumin, g/dL) ]
Delta gap = Anion gap – 12 (normal anion gap)
Normal = 280 - 300 mmol/l
For 0-10 kg: + 4 mL/kg/hr
For 10-20 kg: + 2 mL/kg/hr
For >20 kg: + 1 mL/kg/hr
FW Deficit (Adult Male) = 0.6 x weight (kg) x (current NA / 140-1)
FW Deficit (Adult Female) = 0.5 x weight (kg) x (current NA / 140-1)
FW Deficit (Elderly Male) = 0.5 x weight (kg) x (current NA / 140-1)
FW Deficit (Elderly Female) = 0.45 x weight (kg) x (current NA / 140-1)
FW Deficit (Child) = 0.6 x weight (kg) x (current NA / 140-1)
Formulas
Billing
Dermatologic nomenclature
Creative Commons
Anal tags
Bougie
Second victim
Excipients