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| 2. According to
Formula |
| Clark's
Rule |
(This is based
upon the relationship of a child's weight to the average
weight of 150 lbs for an adult) |
| Dose for child
= Adult Dose x |
Weight
of child (lbs)
150 lbs |
| Fried's Rule (
This is particularly applicable to infants ) |
| Dose for child
= Adult Dose x |
Age of child
(months)
150
|
| Young's
Rule |
( This is based
upon the child's dose being equal to the product of the
adult dose and the age of the child in years divided
by the age plus12 ) |
| Dose for child
= Adult Dose x |
Age
of child (years)
Age + 12
|
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3. According
to Body Surface Area
|
| (Based on the
relationship to average adult surface area 1.73 Mē) |
|
Weight
|
Approximate Surface
Area(Mē)
|
Approximate Percentage
of adult Dose(%)
|
|
Kg
|
lbs
|
|
2
|
4.4
|
0.15
|
9
|
|
4
|
8.8
|
0.25
|
14
|
|
6
|
13.2
|
0.33
|
19
|
|
8
|
17.6
|
0.40
|
23
|
|
10
|
22
|
0.46
|
27
|
|
15
|
33
|
0.63
|
36
|
|
20
|
44
|
0.83
|
48
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