IUGR is defined when :-

IUGR is defined as, when the Bih weight is below the 10th percentile of the average of gestational age . Classification of IUGR TYPE SYMMETRIC / TYPE 1 (20%) ASYMMETRIC / TYPE 2 (80%) ONSET Early in utero Later onset ETIOLOGY Congenital infections, genetic disorders Utero - placental insufficiency, maternal malnutrition, hypeension,renal disease PATHOPHYSIOLOGY Impaired cell division Decreased cell number Irreversible Impaired cellular hyperophy Decreased cell size Reversible CLINICAL FEATURES Inadequate growth of head and body Head: abdomen ratio may be normal Brain is spared, therefore head: abdomen ratio increased PROGNOSIS Poor prognosis More orable prognosis