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Gastrointestinal malformations: impact of prenatal diagnosis on gestational age at birth

Ester Garne1, Maria Loane, Helen Dolk

  • 1Kolding Hospital, Kolding, Denmark. egarne@health.sdu.dk

Paediatric and Perinatal Epidemiology
|June 15, 2007
PubMed

Insights

Prenatal diagnosis of gastrointestinal malformations (GIM) may lead to earlier birth, increasing mortality risk. Balancing early delivery benefits against risks is crucial for managing GIM cases.

Area of Science:

  • Perinatal Medicine
  • Medical Genetics
  • Public Health

Background:

  • Prenatal diagnosis of congenital malformations aims to improve infant outcomes.
  • The impact of prenatal diagnosis on gestational age (GA) at birth requires further investigation.

Purpose of the Study:

  • To analyze the extent to which prenatal diagnosis of gastrointestinal malformations (GIM) shortens gestational age (GA) at birth.
  • To evaluate the implications of reduced GA on infant mortality risk.

Main Methods:

  • Utilized data from 14 population-based congenital malformation registries (EUROCAT) from 1997-2002.
  • Included 1047 liveborn infants with GIMs (oesophageal atresia, duodenal atresia, omphalocele, gastroschisis, diaphragmatic hernia) and no chromosomal anomalies.
  • Compared GA at birth between prenatally and postnatally diagnosed infants.

Main Results:

  • Median GA at birth was lower in prenatally diagnosed GIM cases for four out of five malformations.
  • The reduction in GA for prenatally diagnosed infants was sufficient to potentially increase mortality risk.
  • Birthweight did not significantly differ based on GA between pre- and postnatally diagnosed groups.

Conclusions:

  • Prenatal diagnosis of GIM may result in earlier delivery, potentially increasing infant mortality.
  • Clinical management decisions must weigh the benefits of early delivery against potential risks.
  • The benefits of prenatal diagnosis for liveborn infants may be negated by the adverse effects of a reduced gestational age at birth.

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