The Forced Expiratory Volume in 1 second (FEV1) can be predicted in pediatric patients based on height and other physical characteristics.
NOTE: Quanjer et al provides many additional equations for FEV1.
Linear Equations Based on Height
FEV1 in liters for males 5-18 years old and 42-59 inches tall (Dickman) =
= (0.085 * (height in inches)) - 2.855
FEV1 in liters for males 5-18 years old and 60-78 inches tall (Dickman) =
= (0.121 * (age in years)) + (0.143 * (height in inches)) - 7.864
FEV1 in liters for females 5-18 years old and 42-59 inches tall (Dickman) =
= (0.074 * (height in inches)) - 2.482
FEV1 in liters for females 5-18 years old and 60-78 inches tall (Dickman) =
= (0.085 * (age in years)) + (0.10 * (height in inches)) - 4.939
FEV1 in liters for 4 to 18 years (Weng and Levinson) =
= (0.040 * (height in cm)) - 3.99
FEV1 in liters for boys 5 to 18 years (Godfrey) =
= (0.051 * (height in cm)) - 4.77
FEV1 in liters for girls 5 to 18 years (Godfrey) =
= (0.041 * (height in cm)) - 3.35
FEV1 in liters for boys 4-19 years < 162.6 cm (Rosenthal) =
= (0.034 * (height in cm)) - 2.780
FEV1 in liters for boys 4-19 years >= 162.6 cm (Rosenthal) =
= (0.052 * (height in cm)) - 5.108
FEV1 in liters for girls 4-19 years < 152.6 cm (Rosenthal) =
= (0.033 * (height in cm)) -2.734
FEV1 in liters for girls 4-19 years >= 152.6 cm (Rosenthal) =
= (0.041 * (height in cm)) - 3.680
Exponent of Height
FEV1 in liters for 7 to 19 year olds (Hsu et al) =
= A * 10^(-3) * ((height in cm)^B)
Boys 7 - 19 years |
A |
B |
---|---|---|
black |
1.03 |
2.92 |
hispanic |
1.73 |
2.85 |
white |
0.774 |
3.00 |
Girls 7 - 19 years |
A |
B |
---|---|---|
black |
1.14 |
2.89 |
hispanic |
1.61 |
2.85 |
white |
3.79 |
2.68 |
FEV1 in liters (Polgar and Promadhat) =
= (0.0000021 * ((height in cm)^2.8))
FEV1 in liters for 5 to 25 years of age (Lebowitz et al) =
= 6.844 + (0.040 * (age in years)) - (0.281 * (height in inches)) + (0.003 * ((height in inches)^2))
Natural Logarithm
FEV1 in liters (Wang et al) =
= EXP((B * (LN(height in meters))) + A)
Boys - Age in Years |
A |
B |
---|---|---|
6 |
-0.109 |
2.252 |
7 |
-0.104 |
2.270 |
8 |
-0.089 |
2.257 |
9 |
-0.063 |
2.197 |
10 |
-0.057 |
2.212 |
11 |
-0.093 |
2.324 |
12 |
-0.161 |
2.512 |
13 |
-0.292 |
2.843 |
14 |
-0.329 |
2.983 |
15 |
-0.141 |
2.709 |
16 |
0.062 |
2.409 |
17 |
0.262 |
2.099 |
18 |
0.251 |
2.129 |
Girls - Age in Years |
A |
B |
---|---|---|
6 |
-0.109 |
1.949 |
7 |
-0.144 |
2.243 |
8 |
-0.137 |
2.239 |
9 |
-0.123 |
2.222 |
10 |
-0.161 |
2.364 |
11 |
-0.223 |
2.558 |
12 |
-0.264 |
2.709 |
13 |
-0.153 |
2.535 |
14 |
0.046 |
2.178 |
15 |
0.148 |
2.008 |
16 |
0.181 |
1.972 |
17 |
0.176 |
1.992 |
18 |
0.152 |
2.031 |
Purpose: To estimate FEV1 for pediatric aged patient using physical characteristics.
Specialty: Pulmonology
Objective: clinical diagnosis, including family history for genetics, other testing, severity, prognosis, stage, complications
ICD-10: R94.2,