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Birth weight discordance in spontaneous versus induced twins: impact on perinatal outcome
J Zádori1, Z Kozinszky, H Orvos
1Center for Assisted Reproduction, Kaáli Institute, University of Szeged, Hungary. zjkaali@mail.tiszanet.hu
Purpose:
To compare the rate of birth weight discordance and perinatal outcome of twin pregnancies after assisted reproduction with that of spontaneous twins.
Method:
A total of 12,920 deliveries were analyzed retrospectively. Seventy-five twin pregnancies after ART were compared to the 94 spontaneous counterparts. Birth weight discordance was defined as a difference of 20% or more.
Results:
Discordance rate was elevated (25.3% vs. 17.0%) among ART twins. SGA was increased and NICU admission was more frequent in discordant group. Unlike-sexed twins were more prevalent (73.7% vs. 37.5%) among discordants after ART.
Conclusions:
ART can increase discordance rate which can elevate perinatal risk.
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