 Description

The Total Lung Capacity (TLC) can be predicted in pediatric patients based on height and other physical characteristics.

NOTE: Quanjer et al provides many additional equations for TLC (pages 216s-217s).

Linear Equations Based on Height

TLC in liters for boys 5 to 18 years (Godfrey) =

= (0.065 * (height in cm)) - 5.18

TLC in liters for girls 5 to 18 years (Godfrey) =

= (0.055 * (height in cm)) - 3.95

TLC in liters for boys 4-19 years < 162.6 cm (Rosenthal) =

= (0.0498 * (height in cm)) - 3.828

TLC in liters for boys 4-19 years >= 162.6 cm (Rosenthal) =

= (0.0959 * (height in cm)) - 10.648

TLC in liters for girls 4-19 years (Rosenthal) =

= (-6.8598 * (10^(-7)) * ((height in cm)^4)) + (3.81 * (10^(-4)) * ((height in cm)^3)) - (0.078 * ((height in cm)^2)) + (7.031 * (height in cm)) - 234.08

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

= 0.160 * EXP(0.021 * (height in cm))

Exponent of Height

TLC in liters for males (Polgar and Promadhat) =

= (0.0000056 * ((height in cm)^2.67))

TLC in liters for females (Polgar and Promadhat) =

= (0.000004 * ((height in cm)^2.73))

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

= (1.227 * ((height in meters)^2.80))

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

= (1.189 * ((height in meters)^2.64))

TLC in milliliters (Helliesen et al) =

= 0.003 * ((height in cm)^2.80)

TLC in liters (Engstrom et al) =

= 4.13 * (10^(-6)) * ((height in cm)^2.73)