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polyhydramnios

Wednesday 12 January 2005

Definition: Excess of amniotic fluid.

Associations - Predisposing factors - ETiology

- multiple pregnancy
- major malformations

  • anencephaly
  • esophageal atresia
  • congenital diaphragmatic hernia
  • spina bifida
  • small intestinal obstruction
    • intestinal atresia
    • fetal intestinal volvulus

- chromosomal diseases

  • trisomy 21
  • trisomy 18

- fetal myotonic dystrophia (Steinert myotonic dystrophia)
- Prader-Willi syndrome (12704750)
- myasthenia gravis (8372081)
- Perlman syndrome
- placental hemangioma

- fetal macrosomia
- transfused fetus in twin-twin transfusion (16969785)

- maternal diabetes mellitus

- osteochondrodysplasias

  • campomelic dysplasia
  • chondrodysplasia punctata

Complications

- premature onset of labor and prematurity
- cord prolapse
- fetal malpresentation
- postpartum hemorrhage

See also

- hydrops fetalis