Twin-twin transfusion syndrome during the 2nd trimester is associated with small intertwin hemoglobin differences.
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.
Saunders
N J
NJ
Harris Birthright Research Centre for Fetal Medicine, King's College School of Medicine, London, UK.
Snijders
R J
RJ
Nicolaides
K H
KH
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
D006454:Hemoglobins