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Calculation
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Baby's expected weight
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Start with birth weight
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Birth weight
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3.2 kgs
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Subtract 40 gm / day for 1-5 days
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Weight at 5 days
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3.0 kgs
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Add 40 gm / day for days 6-10
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Weight at 10 days
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3.2 kgs
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Add 30 gm / day or 170-230 gm / week
from 10 days to 3 months
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Weight at 1 month
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3.7 kgs
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Weight at 2 months
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4.6 kgs
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Weight at 3 months
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5.5 kgs
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Height or length of the baby matters too
Getting taller is also included in the growth pattern
of the baby. Weight gain is not the only way to assess a baby's growth.
Children are meant to get bigger overall and not just fatter and fatter.
The baby's weight increases faster than the length. Whatever be the baby's
length at birth, approximately 2cm (3/4") will be gained each month
or just over 5cm (2") in 3 months.
There is a consistent relationship of weight & height
in the normal growth pattern of the child.
Exception to normal growth patterns
Pre-term babies : They are very slow to get started
on their feeding, and therefore their growing. The weight tends to
remain in a low position for a long time.
Babies who are ill immediately after birth or in
the first weeks :
These babies fall short of gaining weight or may actually loose some.
Good care may lead to a spurt of "catch-up growth", so that
the baby's personal growth curve moves upwards towards the normal.
Babies who are bottle-fed from birth : These babies
may loose no weight in the initial days. First few days might show
some weight gain. They may gain very fast from the beginning, which
also depends upon the formula food given. An even greater rise occurs
in the babies weight when solids are added in addition to the over-concentrated
milk.
There is a noticeable disparity in the height gain compared
to the weight. A baby who is gaining weight faster than nature intended,
will not gain length to match it.
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