gynecology and obstetrics
Oligohydramnios
Introduction
Oligohydramnios is amniotic fluid volume that is less than expected for gestational age; it is associated with maternal and fetal complications. Diagnosis is by ultrasonographic measurement of amniotic fluid volume. Management involves close fetal monitoring and serial ultrasonographic assessments. Causes of oligohydramniosinclude the following: Uteroplacental insufficiency (eg, due to Preeclampsia and Eclampsia , Prelabor Rupture of Membranes (PROM) (premature or at term) Postterm Pregnancy None Some medications (eg, angiotensin-converting enzyme [ACE] inhibitors, nonsteroidal anti-inflammatory drugs [NSAIDs]) Fetal Overview of Chromosomal Abnormalities (eg, aneuploidy) Fetal malformations, particularly those that decrease urine production Small-for-Gestational-Age (SGA) Infant None Fetal death Idiopathic 