George K I Papaioannou

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BACKGROUND The aim of this retrospective study was to assess the value of maternal history and ultrasound scan findings at 6-10 weeks for predicting early miscarriage. METHODS Embryonic crown-rump length (CRL), heart rate (HR), gestational sac diameter (GSD) and yolk sac diameter (YSD) were compared in two groups of women with singleton pregnancies(More)
OBJECTIVES To construct normal ranges for embryonic crown-rump length (CRL), heart rate (HR), gestational sac diameter (GSD) and yolk sac diameter (YSD) at 6-10 weeks of gestation. METHODS We examined 4,698 singleton pregnancies with ultrasound measurements of CRL, HR, GSD and YSD at 6-10 weeks and CRL at 11-13 weeks resulting in the live birth after 36(More)
OBJECTIVE The objective of the study was to predict the outcome of dichorionic (DC) twin pregnancies at 6-10 weeks' gestation from intertwin discordance in crown-rump length (CRL), heart rate (HR), and gestational sac diameter (GSD). STUDY DESIGN Intertwin discordance in CRL, HR, and GSD, was compared in 3 groups of DC twin pregnancies with 2 live embryos(More)
OBJECTIVES To determine if sonographic features of live embryos at 6-10 weeks' gestation are altered in aneuploidies. METHODS Embryonic crown rump length (CRL), embryonic heart rate, gestational sac diameter (GSD) and yolk sac diameter (YSD) were measured by transvaginal sonography in 5603 live embryos from singleton pregnancies at 6-10 weeks' gestation.(More)
AIMS To investigate the possible association between maternal diabetes mellitus and increased yolk sac diameter (YSD). METHODS We searched the Early Pregnancy Unit database to identify singleton pregnancies with measurements of embryonic crown-rump length (CRL) and YSD at 6-10 weeks of gestation and subsequent delivery of phenotypically normal neonates.(More)
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