Efficacy of trans-cerebellar diameter/abdominal circumference ratio versus head circumference/abdominal circumference ratio in prediction of asymmetrical intrauterine growth retardation

Background: Determination of gestational age is an important step pregnancy management and foetal development evaluation in obstetrics. Any error this estimation results prematurity or post maturity case if the expected date delivery not known, there high chance perinatal mortality near outcome. Hence it achieving uneventful gestation to have a sensitive, specific independent obstetric biometric parameter that stays constant throughout gestation. Trans-cerebellar diameters (TCD)/ abdominal circumference (AC) ratio are reliable, predictors assess evaluate fetal growth. Aim was compare accuracy TCD/ AC with head (HC)/ predicting asymmetrical IUGR.Methods: A prospective study conducted over period one year on 100 clinically suspected IUGR pregnancies who were evaluated BPD, HC, FL along TCD measured for assessing sonological age. Two morphometric ratios-TCD/AC HC/AC calculated. Estimated weight calculated all these its percentile determined. Then those cases followed up post-delivery new Ballord score CAN (clinical assessment nutritional status at birth) calculated.Results: In present study, sensitivity, specificity, PPV, NPV DA 83.93%, 65.91%, 75.81%, 76.32% 76% respectively TCD/AC versus IUGR. Conclusions: Both ratios can be used detecting good diagnostic accuracy. However, had better validity compared asymmetric