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Perinatal outcome of pregnancies after assisted reproduction: a case-control study
M Dhont1, F De Neubourg, J Van der Elst
1Department of Obstetrics and Gynecology, University Hospital, Ghent, Belgium.
Purpose:
A matched case-control study of all pregnancies obtained after either IVF or ICSI was conducted to investigate the perinatal outcome.
Methods:
Three hundred eleven singleton and 115 twin pregnancies obtained after assisted reproduction were studied. Controls were selected from a regional register and were matched for maternal age, parity, singleton or twin pregnancy, and date of delivery.
Results:
No significant difference was observed for gestational age at delivery, birth weight, incidence of congenital anomalies, and incidence of perinatal mortality between ART (singleton and twin) pregnancies and spontaneous controls. ART twin pregnancies showed a higher incidence of preterm deliveries than control pregnancies (52 vs 42%; P < 0.05) and needed more neonatal intensive care (47 vs 26%; P < 0.05).
Conclusions:
From this case-control study it is concluded that the perinatal outcome of ART singleton pregnancies is not different from that in matched controls. ART twin pregnancies showed a higher incidence of preterm deliveries than control pregnancies and needed more neonatal intensive care.