The amniotic fluid volume (AFV) is regulated by several systems, including the in-tramembranous pathway, fetal production (fetal urine and lung fluid) and uptake (fetal swallowing), and the balance of fluid movement via osmotic gradients. The normal AFV across gestation has not been clearly defined; consequently, abnormal volumes are also poorly defined. Actual AFVs can be measured by dye dilut...

This study assessed whether the amniotic fluid index (AFI) or the single deepest pocket (SDP) is the best technique to estimate amniotic fluid volume. The AFI and SDP were compared to a dye-determined or directly measured amniotic fluid volume. A PUBMED search from 1990 to 2006 was conducted using the search terms "single deepest pocket" or "largest vertical pocket" or "maximum vertical pocket"...

Introduction: Two techniques for sonographic evaluation of amniotic fluid are Amniotic Fluid Index (AFI) and Single Deepest Pocket (SDP).  In this study,we aimed to determine the accuracy of AFI and SDP in predicting prolonged pregnancy outcomes. Methods: In this prospective, double-blinded, cohort study, 362 women with more than 40 weeks of gestational age were evaluated. Both AFI and SDP meth...

OBJECTIVE This cross-sectional study was carried out to assess the influence of Ramadan fasting on amniotic fluid volume. METHODS For this purpose 2 groups of fasting (n=28) and non-fasting (n=25) pregnant women were investigated for amniotic fluid index (AFI) and deepest vertical pocket of amniotic fluid in November (Ramadan month) of 2001-2002 in Kerman Prenatal Clinics in Kerman, Iran. Mea...