title: Association between twin discordance at 6-9 weeks' of gestation and birthweight complications.
abstract: 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.
authors: Department of Obstetrics & Gynaecology, Monash Medical Centre, Melbourne, Australia. kirstenpalmer@ymail.com
authors: Kirsten
authors: K
authors: Palmer
authors: Pavitra
authors: P
authors: Delpachitra
authors: Joseph
authors: J
authors: Onwude
authors: Luk
authors: L
authors: Rombauts
authors: Simon
authors: S
authors: Meagher
authors: Stephen
authors: S
authors: Tong
mesh_terms: D001724:Birth Weight; D015331:Cohort Studies; D005260:Female; D047109:Fetal Development; D005865:Gestational Age; D006801:Humans; D007223:Infant; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D012189:Retrospective Studies; D014427:Twins; D016216:Ultrasonography, Prenatal