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Published on: March 21, 2018

Association between twin discordance at 6-9 weeks' of gestation and birthweight complications

Kirsten Palmer1, Pavitra Delpachitra, Joseph Onwude

  • 1Department of Obstetrics & Gynaecology, Monash Medical Centre, Melbourne, Australia. kirstenpalmer@ymail.com

Twin Research and Human Genetics : the Official Journal of the International Society for Twin Studies
|August 17, 2010
PubMed

Twins achieved through in-vitro fertilisation often undergo a viability ultrasound at 6-9 weeks of gestation. The presence of inter-twin crown-rump length discordance at this stage is not an uncommon finding; however the clinical significance of this is unknown. We analyzed 218 dichorionic twin pregnancies, producing two live fetuses > 24 weeks gestation, to determine whether inter-twin discordance (> or = 85th centile) in the mid-first trimester was associated with birthweight discordance (> 20%), or small for gestational age (< 10th centile). The incidence of birthweight discordance and small for gestational age infants were determined, with no increased risk found for the discordant population. This may provide some reassurance to treating clinicians.

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