OP11.08: Factors influencing ductus venosus Doppler waveforms during labor

Bangkok, Thailand between June 1999 and May 2003. The measurement of four-quadrant amniotic fluid index was performed by ultrasonography in the early intrapartum period. The amniotic fluid index 5 cm. The incidence of poor perinatal outcome was 16.67%. An intrapartum amniotic fluid index of ≤ 5 cm, in comparison with > 5 cm, is associated with an increased risk of poor perinatal outcome (P < 0.05). The sensitivity, specificity, positive and negative predictive values and accuracy of four-quadrant amniotic fluid index ≤ 5 cm for predicting perinatal outcome were 72%, 89.86%, 58.69%, 94.13%, and 86.88%, respectively. Conclusion: An intrapartum amniotic fluid index of ≤5 cm is associated with a significantly increased risk of poor perinatal outcome. The amniotic fluid index measurement is an effective diagnostic test to identify fetus at risk in the intrapartum period of the high risk pregnancy.