Placental infarction

Radswiki et al.

Placental infarction refers to a localised area of ischaemic villous necrosis. It is a significant cause of placental insufficiency

A localized infarction can occurs in up to ~12.5% (range 5-20%) of all gestations. 

It usually results from an interrupted maternal blood supply

Location

Placental infarcts are more common at the periphery of the placenta.

Associations
  • post-term pregnancies
  • maternal hypertension
  • retroplacental hemorrhage
  • other maternal medical conditions
Antenatal ultrasound

Most placental infarcts are difficult to diagnose on ultrasound. They may on occasion be seen as a hypoechoic region with thick hyperechoic rim and/or as a well circumscribed mixed/hyperechoic pattern mass.

Those that occur at the placental margins are usually of no clinical significance at this location. An infarction in the first or second trimester within the centre of the placenta or with extensive involvement of the placenta (more than 50%) is much more concerning.

Complications

Intrauterine growth retardation, fetal death, and recurrent abortion have been associated with large (>10% of parenchyma) or early onset infarctions.

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Article Information

rID: 15485
Tag: cases
Synonyms or Alternate Spellings:
  • Placental infarct
  • Infarction of the placenta
  • Placental infarcts
  • Placental infarctions

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