est_adult_vols: Estimate Adult Fluid Volumes
In rpkyle/cscmisc: Miscellaneous Data Manipulation and Simulation Tools

Description Usage Arguments Details Author(s) Examples

Computes estimated total body water, extracellular and intracellular fluid volumes for adults.

1	est_adult_vols(..., wt.kg, wt.lb, is.female, return.df)

`...`	Ignored. This forces all parameters to be named, which is safer.
`wt.kg`	Numeric. Weight in kilograms.
`wt.lb`	Numeric. Weight in pounds.
`is.female`	Logical. TRUE for females, FALSE for males.
`return.df`	Logical. TRUE to return `data.frame`, FALSE to return `list`.

All arguments can be vectors. By default, a list is returned, though a data.frame may be requested instead.

The formula used is simple, and derived from human physiology references:

Total body water (tbw) = 0.5 * wt.kg (females), 0.6 * wt.kg (males) Extracellular (ECC) volume (litres) = tbw * (1/3) Intracellular (ICF) volume (litres) = tbw * (2/3) Interstitial (ISF) volume (litres) = tbw * (3/4) Plasma volume (litres) = tbw * (1/4)

Ryan Kyle, ryan.kyle@mail.mcgill.ca

# For a male weighing 65kg, estimated total body water is 39L, ECC volume is 13L
est_adult_vols(wt.kg=65, is.female=FALSE)

# For a female weighing 50kg, estimated total body water is 25L, ECC volume is 8.33L
est_adult_vols(wt.kg=50, is.female=TRUE)