Abstract
Amniotic fluid volume (AFV) assessment is an essential part of antenatal fetal screening programs as it reflects fetal well-being. Oligohydramnios is a decline in AFV for gestational age. It is associated with high incidence of fetal morbidity and mortality as well as poor maternal outcomes with increased rate of obstetric intervention. Therefore, accurate estimation of AFV is crucial in both low-as well as high-risk pregnancies. Ultrasound has been described as a practical and accurate method for estimation of AFV. The commonly used techniques are amniotic fluid index (AFI) and single deepest pocket (SDP). In this study, we reviewed the recent literature comparing the two techniques in pregnancies complicated with oligohydramnios. The results indicated that SDP is relatively more accurate, with AFI resulting in overdiagnosis of oligohydramnios. This was associated with more unnecessary obstetric interventions, without significant improvement in maternal and fetal outcomes.
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