Ideal Body Weight[a] with IVIg Dosing

Disclaimer:

The Dose Calculator is intended to be used when determining the dose of IVIG for clinically obese patients; it is not recommended for paediatric patients nor any patients (incl. adults) under 5ft in height. For other patients, the dosing information recommended in the Ontario IVIG Utilization Management guidelines should be followed.

Neither the guidelines nor the dose calculator is intended to replace sound clinical judgment concerning a patient’s unique situation. No formal monitoring of IVIG use in Ontario is being implemented at this time, however use of the dose calculator to limit overuse of the product is strongly encouraged.

Furthermore, although the advice and information contained in the guidelines and dose calculator is believed to be true and accurate at the time of going to press, neither the authors nor the publishers can accept any legal responsibility for any errors or omissions that may have been made.

Ideal Body Weight Calculator

Enter Sex, Height & Weight then click "Calculate".
Sex
Height
(-- in)
Weight
(-- lbs)

using Devine formula[a]

(for obese or overweight patients)

Ideal Body Weight

Dosing Weight[b]

--

--

kg

kg

IVIg Dose Calculator

Select Dosing, then click "Calculate".
Dosing  gram/kg

using Dosing Weight[b]

Please FIRST complete the Ideal Body Weight calculation.

IVIg Dose

Rounded Dose

--

--

gg
(Rounded to Nearest 5g)
[a]Pai MP, Paloucek FP. The origin of the "ideal" body weight equations. Ann Pharmacother. 2000 Sep;34(9):1066-9.
Ideal Body Weight (IBW), Devine Formula is:
Ideal Body Weight (male) = 50.0 kg + 2.3 kg (each inch > 5 feet)
Ideal Body Weight (female) = 45.5 kg + 2.3 kg (each inch > 5 feet)
[b]Siegel J. Immunoglobulins and obesity. Pharmacy Practice News. 2010;37(1):8-9
Dosing Weight is an adjusted body weight (of obese or overweight patients) and should only be used to calculate the dose of drugs for which there are recommendations specifying that the actual body weight should be adjusted for use in the dose calculations.
Dosing Weight = IBW + [0.4 x (Actual - IBW)]
exception: if Actual < IBW, then Dosing Weight = Actual