The Forced Vital Capacity (FVC) can be predicted in pediatric patients based on height and other physical characteristics.
NOTE: Quanjer et al provides many additional equations for FVC (page 201s).
Linear Equations Based on Height
FVC in liters for males 5-18 years old and 42-59 inches tall (Dickman) =
= (0.094 * (height in inches)) - 3.042
FVC in liters for males 5-18 years old and 60-78 inches tall (Dickman) =
= (0.174 * (age in years)) + (0.164 * (height in inches)) - 9.425
FVC in liters for females 5-18 years old and 42-59 inches tall (Dickman) =
= (0.077 * (height in inches)) - 2.371
FVC in liters for females 5-18 years old and 60-78 inches tall (Dickman) =
= (0.102 * (age in years)) + (0.117 * (height in inches)) - 5.869
FVC in liters for boys 5 to 18 years (Godfrey) =
= (0.06 * (height in cm)) - 5.71
FVC in liters for girls 5 to 18 years (Godfrey) =
= (0.049 * (height in cm)) - 4.42
FVC in liters for boys 4-19 years < 162.6 cm (Rosenthal) =
= (0.043 * (height in cm)) - 3.619
FVC in liters for boys 4-19 years >= 162.6 cm (Rosenthal) =
= (0.068 * (height in cm)) - 7.038
FVC in liters for girls 4-19 years < 152.6 cm (Rosenthal) =
= (0.030 * (height in cm)) - 3.311
FVC in liters for girls 4-19 years >= 152.6 cm (Rosenthal) =
= (0.045 * (height in cm)) - 3.881
Exponent of Height
FVC 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 |
1.07 |
2.93 |
hispanic |
1.06 |
2.97 |
white |
0.358 |
3.18 |
Girls 7 - 19 years |
A |
B |
---|---|---|
black |
0.834 |
2.98 |
hispanic |
1.25 |
2.92 |
white |
2.57 |
2.78 |
FVC in liters for males (Polgar and Promadhat) =
= (0.0000044 * ((height in cm)^2.67))
FVC in liters for females (Polgar and Promadhat) =
= (0.0000033 * ((height in cm)^2.72))
Natural Logarithm
FVC in liters (Wang et al) =
= EXP((B * (LN(height in meters))) + A)
Boys - Age in Years |
A |
B |
---|---|---|
6 |
-0.024 |
2.470 |
7 |
-0.018 |
2.489 |
8 |
0.005 |
2.443 |
9 |
0.017 |
2.426 |
10 |
0.030 |
2.407 |
11 |
0.009 |
2.468 |
12 |
-0.061 |
2.649 |
13 |
-0.175 |
2.924 |
14 |
-0.219 |
3.060 |
15 |
-0.079 |
2.859 |
16 |
0.104 |
2.591 |
17 |
0.253 |
2.374 |
18 |
0.296 |
2.316 |
Girls - Age in Years |
A |
B |
---|---|---|
6 |
-0.013 |
2.007 |
7 |
-0.062 |
2.385 |
8 |
-0.055 |
2.381 |
9 |
-0.039 |
2.351 |
10 |
-0.068 |
2.458 |
11 |
-0.120 |
2.617 |
12 |
-0.174 |
2.776 |
13 |
-0.061 |
2.576 |
14 |
0.139 |
2.208 |
15 |
0.210 |
2.099 |
16 |
0.226 |
2.097 |
17 |
0.214 |
2.146 |
18 |
0.195 |
2.179 |
Purpose: To estimate forced vital capacity (FVC) 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: J20-J22, J40-J47, R94.2, T81.8,