title: Twin-twin transfusion syndrome during the 2nd trimester is associated with small intertwin hemoglobin differences.
abstract: In four twin pregnancies presenting with acute 2nd-trimester polyhydramnios due to presumed twin-twin transfusion syndrome, the fetal hemoglobin concentration was measured in samples obtained by cordocentesis. In no instance did the twin pair difference in the hemoglobin concentration exceed 2.7 g/dl.
authors.affiliation: Harris Birthright Research Centre for Fetal Medicine, King's College School of Medicine, London, UK.
authors.forename: N J
authors.initials: NJ
authors.lastname: Saunders
authors.forename: R J
authors.initials: RJ
authors.lastname: Snijders
authors.forename: K H
authors.initials: KH
authors.lastname: Nicolaides
mesh_terms: D005260:Female; D005312:Fetal Blood / Q000737:chemistry*; D005330:Fetofetal Transfusion / Q000097:blood*; D005865:Gestational Age; D006454:Hemoglobins / Q000032:analysis*; D006801:Humans; D006831:Polyhydramnios; D011247:Pregnancy
chemical_list: D006454:Hemoglobins