IUGR Types

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 Intra Uterine Growth Retardation Types :

Symmetrical  MC in west	Asymmetrical MC in India
Cause : Chromosome Abnormality	Maternal Complication
Decreased Cell Number Cell size decreased/normal Brain size decreased	Cell number Normal Cell size decreased Head size normal (Head Sparing = Brain sparing) Therefore HC > CC by >3cm
Ponderal Index (PI) = { Weight (g) / Length3 (cm) } x 100 Here PI > 2 (also in Normal babies)	PI < 2

Normal HC/AC

• is >1 -at-- 32wks
• is =1 -at-- 32-34 wks
• is <1 -at-- >34wks

But in asymmetrical IUGR -- HC / AC remains High (because HC is spared)

Normal FL/AC is aprrox = 22 after 21 wks till term.

In asymmetrical IUGR it increases >23.5 as FL is not affected in asymmetrical IUGR

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