In vitro fertilization (IVF) and embryo transfer (ET) have resulted in the birth of nine babies, including twins. One of the twins had a congenital cardiac malformation and seven of the nine babies were girls. Labor occurred preterm in two pregnancies; and in six delivery was by cesarean section. Plasma human chorionic gonadotropin (hCG), progesterone (P), and estriol (E3) measurements and ultrasonic scans showed no obvious differences from pregnancies resulting from natural conception. Cytogenetic studies from cord blood and histologic examination of the placentas were unremarkable. The theoretic risks of pregnancy following IVF and ET are discussed. Definite conclusions cannot be drawn until a large number of babies are delivered and a long-term follow-up is completed. Initial results from the current small sample are encouraging.
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