Oligohydramnios

• reduce volume of amniotic fluid

Causes

• defective liquor secreting cells

• from foetal renal agenesis / malformations

• intrauterine growth retardation (IUGR)

• rupture of membranes

  • at 18-24 weeks results in pulmonary hypoplasia

• post-dates

Complications

• early in pregnancy

  • amniotic bands may form

• later

  • pulmonary hypoplasia

  • pressure deformities

    • wry neck

    • altered shape of skull

    • club foot

  • foetal skin dry and leathery

• labour

  • umbilical compression → foetal distress

    • attempted to prevent by infusion of saline

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