Calculator: Predicted body weight for mechanical ventilation in adults

Input

Base weight for sex (biologic) [kg]	Female (45.5)
	Male (50)
Height

Results

Important: Inputs must be complete to perform calculation.


Predicted body weight

Decimal precision

Notes

The formula for predicted body weight used in the calculator is the same as that used in the UpToDate calculator for ideal body weight.^[1,2]
The UpToDate ideal body weight calculator also provides adjusted body weight, which may be helpful in drug dosing calculations for patients with obesity.
For more information on the use of the predicted body weight calculation, please refer to UpToDate topic reviews on mechanical ventilation strategies for acute respiratory distress syndrome.
To convert from cm to in, divide by 2.54; to convert from in to cm, multiply by 2.54.

Equations used

Predicted body weight [kg] = Base weight for sex (biologic) [kg] + (2.3 * (Height [in] - 60))

References

Acute Respiratory Distress Syndrome Network, Brower RG, Matthay MA, et al. Ventilation with lower tidal volumes as compared with traditional tidal volumes for acute lung injury and the acute respiratory distress syndrome. N Engl J Med 2000; 342:1301.
Devine BJ. Gentamicin therapy. Drug Intell Clin Pharm 1974; 8:650.

Only digits 0 to 9 and a single decimal point (".") are acceptable as numeric inputs. Attempted input of other characters into a numeric field may lead to an incorrect result.

Information on this page may not appear correctly if printed.

All information contained in and produced by the EBMcalc system is provided for educational purposes only. This information should not be used for the diagnosis or treatment of any health problem or disease. THIS INFORMATION IS NOT INTENDED TO REPLACE CLINICAL JUDGMENT OR GUIDE INDIVIDUAL PATIENT CARE IN ANY MANNER. Click here for full notice and disclaimer.

Topic 141068 Version 1.0

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Calculator: Predicted body weight for mechanical ventilation in adults