Nomogram and equation to determine body surface area. (From Engorn B, Flerlage J, eds. The Harriet Lane
Handbook. 20th ed. Philadelphia, PA: Elsevier Mosby; 2015. Reprinted with permission from Elsevier.)
Appendix
Nomogram for Determing Body Surface Area
Based on the nomogram shown below, a straight line joining the patient’s height and
weight will intersect the center column at the calculated body surface area (BSA). For
children of normal height and weight, the child’s weight in pounds is used, and then th
examiner reads across to the corresponding BSA in meters. Alternatively, Mosteller’s
formula can be used.
1.30
80
70
60
50
40
30
25
20
15
10
9.0
8.0
7.0
6.0
5.0
4.0
3.0
2.5
2.0
1.5
1.0
1.20
1.10
1.00
.90
.80
.70
.60
.55
.50
.45
.40
.35
.30
.25
.20
.15
.10
240
180
160
140
130
120
110
100
90
80
70
60
50
45
40
35
30
25
20
18
16
14
12
10
9
8
7
6
5
4
3
90
2.0
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
80
60
70
50
30
40
20
15
10
9
8
7
6
5
4
3
2
220
200
190
180
170
160
150
140
130
120
110
100
90
80
70
60
50
40
30
85
80
75
70
65
55
50
45
40
35
30
28
26
24
22
20
18
17
16
15
14
13
12
19
60
cm in lb
m2
kg
For children of
normal height
for weight
W
eight
in
pounds
Surface
area
in
square
meters
Height Weight
Height (cm) x Weight (kg)
3600
Alternative (Mosteller’s formula):
Surface area (m2) =
Nomogram
SA
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