List of All Drug-and-pharmacology Formulas

All Drug-and-pharmacology Formulas List

Half-life time of Medicine (t1/2)

Formula:



Half-life time of Medicine(t1/2) = ( 0.5 * (Ao / Ko) )


Where,

Ao = initial concentration of the drug (Ao)
Ko = zero-order rate constant (ko)

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kt/v Dialysis (Daugirdas) Dose

Daugirdas Formula:

Kt/V = (-1) * log(Ratio-(0.03)) + ((4-(3.5 * Ratio)) * ( Ultrafiltrate Volume / Weight))

Where
,
Ratio = Post BUN/Pre BUN

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Infusion Dose of Drug

Formulas Used:


Infusion of a Dose = (( Dose Ordered × Standard Volume) / (Standard Dose × Amount of Time)) × 60

Where,

CF = Conversion Factor = (UDO / USDA)
UDO = Units Dose Ordered
USDA = Units Standard Dose

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Dose Available Per Tablet

Formula:


Dose Available Per Tablet = ( dor / da )

Where,
dor - Dosage Ordered in mg
da - Dosage Available in mg

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Liquid PO Dosage (LD)

PO Liquid Dosage Formula:


LD = (OD/SD)*SDU
This calculator calculates the liquid PO dosage calculation.

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Carboplatin AUC Dose


Formula:

GFR for Male = (((140-age) / serum creatinine) * 1) × (weight (kg) / 72)
GFR for Female = (((140-age) / serum creatinine) * 0.85) × (weight (kg) / 72)
Carboplatin Dose = Target AUC * (GFR + 25)


Where,

GFR = Glomerular filtration rate

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Dextrose IV Fluid

Formula:


Dextrose = (mix cc * mix + base cc * base) / (mix cc + base cc);
where,
cc - concentration

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Hyperglycemia Sodium Correction

Formula:

Corrected Sodium Level By Katz Method = Measured Sodium + 0.016 × ( Serum Glucose - 100 )
Corrected Sodium Level By Hillier Method = Measured Sodium + 0.024 × ( Serum Glucose - 100 )

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Free Water Deficit

Formula:

FW Deficit (Adult Male) = 0.6 x Weight x ( Current Sodium(Na) / Desired Sodium - 1 )
FW Deficit (Adult Female) = 0.5 x Weight x ( Current Sodium(Na) / Desired Sodium - 1 )
FW Deficit (Elderly Male) = 0.5 x Weight x ( Current Sodium(Na) / Desired Sodium - 1 )
FW Deficit (Elderly Female) = 0.45 x Weight x ( Current Sodium(Na) / Desired Sodium - 1 )
FW Deficit (Child) = 0.6 x Weight x ( Current Sodium(Na) / Desired Sodium - 1 )

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