*, Goyal S. and *, Suresh A. and Rao, Arun A (2014) Amniotic Fluid Index versus Umbilical Artery Doppler Velocimetry in Prediction of Perinatal Outcome. International Journal of Innovative Research & Development, 3 (11). pp. 91-95. ISSN 2278 – 0211

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Abstract

Aim and Objectives: To assess the sensitivity, specificity, positive and negative predictive values of Amniotic Fluid Index and Umbilical Artery S/D Ratio in the third trimester for the prediction of perinatal outcome and to compare the performance of both the tests. Materials and Methods: It is a prospective study conducted at a tertiary care centre. AFI and Umbilical Artery S/D Ratio was measured every 4 weeks for high risk pregnancy cases beyond 30 weeks period of gestation and perinatal outcome noted. Results were analyzed by diagnostic tests sensitivity, specificity, positive and negative predictive values. Result: Amniotic Fluid Index has sensitivity, specificity and positive and negative predictive values of 55 % – 87.5%, 65 % - 75%, 35% - 60%, 70% - 97% in predicting poor perinatal outcome. Whereas Umbilical artery S/D ratio has sensitivity, specificity and positive and negative predictive values of 60 % – 80% , 70 % - 80%, 20% - 80%, 80% - 100% in predicting poor perinatal outcome. Conclusion: Antepartum foetal surveillance is the cornerstone of management which has been revolutionized by use of Ultrasound. There is a significant association between AFI, Umbilical artery Doppler on perinatal outcome. Both the tests should form an integral part of antepartum fetal surveillance In the present study Umbilical Artery S/D ratio has better performance value than Amniotic Fluid Index in predicting perinatal outcome. Umbilical Artery S/D Ratio is better predictor of perinatal outcome in high risk pregnancies.

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