diagnosis of postmaturity

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The diagnosis of postmaturity is often very uncertain.

Antenatal records should be consulted for accurate predictors of the gestational age. Relevant information includes:

  • a certain LMP in a woman with regular periods
  • a bimanual examination between the 8th and 14th weeks of gestation
  • a crown-rump measurement (1st trimester) or biparietal diameter (2nd trimester) by ultrasound scan

Last reviewed 01/2018

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