Placental characteristics in growth-discordant monochorionic twins: A matched case-control study

Abstract Objective To compare the placental characteristics in monochorionic (MC) twin pregnancies with and without birth weight discordance (BWD). Methods We performed a matched case-control study to compare the placental characteristics of MC placentas from pregnancies with BWD (≥25%) ( n = 47) w...

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Veröffentlicht in:	Placenta (Eastbourne) 2012-03, Vol.33 (3), p.171-174
Hauptverfasser:	Lopriore, E, Pasman, S.A, Klumper, F.J, Middeldorp, J.M, Walther, F.J, Oepkes, D
Format:	Artikel
Sprache:	eng
Schlagworte:	Arterio-arterial anastomosis Biological and medical sciences Birth Weight - physiology Birth weight discordance Case-Control Studies Chorion Diseases in Twins - pathology Embryology: invertebrates and vertebrates. Teratology Female Fetal Development - physiology Fetal Growth Retardation - pathology Fetal Weight - physiology Fundamental and applied biological sciences. Psychology Gestational Age Humans Infant, Newborn Internal Medicine Male Monochorionic placentas Obstetrics and Gynecology Placenta - pathology Placental sharing Placentation Pregnancy Pregnancy, Twin - physiology Selective intrauterine growth restriction Twins, Monozygotic Velamentous cord insertion
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Zusammenfassung:	Abstract Objective To compare the placental characteristics in monochorionic (MC) twin pregnancies with and without birth weight discordance (BWD). Methods We performed a matched case-control study to compare the placental characteristics of MC placentas from pregnancies with BWD (≥25%) ( n = 47) with a control group of MC placentas without BWD ( n = 47), matched for gestational age at birth. Placental sharing, angioarchitecture and diameter of the arterio-arterial (AA) anastomosis were assessed by placental injection with colored dye. Results The rate of velamentous cord insertion in MC placentas with and without BWD was 30% (28/94) and 16% (15/94), respectively ( p = 0.036). Placental sharing discordance in MC placentas with and without BWD was 36% and 17%, respectively ( p
ISSN:	0143-4004 1532-3102
DOI:	10.1016/j.placenta.2011.12.004