 ### Description

The Functional Residual Capacity (FRC) can be predicted in pediatric patients based on height and other physical characteristics.

NOTE: Quanjer et al provides many additional equations for FRC (pages 210s-211s).

Linear Equations Based on Height

FRC in liters for males 4-19 years < 162.6 cm (Rosenthal) =

= (0.024 * (height in cm)) - 1.716

FRC in liters for males 4-19 years >= 162.6 cm (Rosenthal) =

= (0.059 * (height in cm)) - 7.036

FRC in liters for females 4-19 years (Rosenthal) =

= (-1.273 * (10^(-7)) * ((height in cm)^4)) + (6.981 * (10^(-5)) * ((height in cm)^3)) - (0.0137 * ((height in cm)^2)) + (1.148 * (height in cm)) - 33.928

FRC in liters for patients 4 to 18 years (Weng and Levison) =

= 0.067 * EXP(0.0211 * (height in cm))

Exponent of Height

FRC in milliters for males (Polgar and Promadhat) =

= (0.00075 * ((height in cm)^2.92))

FRC in milliters for females (Polgar and Promadhat) =

= (0.00178 * ((height in cm)^2.74))

FRC in liters for males 8-16 years (Cotes et al) =

= (0.5 * ((height in meters)^3.120))

FRC in liters for females 8-16 years (Cotes et al) =

= (0.528 * ((height in meters)^2.81))

FRC in liters (Helliesen et al) =

= 0.88 * 10^(-6) * ((height in cm)^2.91)

FRC in liters (Engstrom et al) =

= 0.92 * (10^(-6)) * ((height in cm)^2.86)

FRC in liters for males (DeMuth et al) =

= 0.7312 * 10^(-6) * ((height in cm)^2.93)

FRC in liters for females (DeMuth et al) =

=4.781 * 10^(-6) * ((height in cm)^2.54)