Pregnancy Outcomes of Idiopathic-Polyhydramnios with Normal Ultrasound

摘要

Polyhydramnios is present in approximately 2% ofpregnancies. The overall incidence of polyhydramniosirrespective of etiology ranges in various studies from0.2 to 3.9% (1,2). Approximately 50-60% of cases areidiopathic (3). The amniotic fluid index (AFI) techniquedefines hydramnios as an AFI of ≥24 cm or ≥25 cm,which respectively is ≥95 and ≥97.5% in normalsingleton pregnancies. Also, the single deepest pocket(SDP) is ≥8, or the examiner’s subjective assessment ofhaving an increased amount of amniotic fluid volume(1). Idiopathic-polyhydramnios (IP) is defined asdisorders that are not associated with factors such asmaternal diabetes, isoimmunization, fetal infection(Cytomegalovirus (CMV) or toxoplasmosis), placentaltumors, multiple gestations, or fetus related anomaliesin singleton pregnancies (e.g., central nervous system orgastrointestinal anomalies, aneuploidy, other structuralanomalies, and hydrops) that can result inpolyhydramnios (1,4-7).