Abstract
Purpose
To investigate whether twin pregnancies conceived by different forms of fertility treatments are associated with adverse neonatal outcomes and to examine the difference in maternal and obstetrical characteristics between patients.
Methods
Our study was a retrospective analysis of twin pregnancies conceived by fertility treatments from a prospectively collected database. Treatments were stratified into two groups: group 1 (ART) consisted of in vitro fertilization (IVF) and intracytoplasmic sperm injection (ICSI), and group 2 (non-ART) included intrauterine insemination (IUI) and ovulation induction (OI). Composite neonatal morbidity included respiratory distress syndrome, intraventricular hemorrhage, leukomalacia, chronic lung disease, and death prior to discharge.
Results
There were 460 neonates in our study; among them, 67% (n = 310) were in group 1, and 33% (n = 150) in group 2. Group 1 patients were more likely to be older (p = 0.004), nulliparous (p = 0.01), delivered twins with lower birth weights (2278 g ± 605 vs. 2427 ± 519, p = 0.009), and had more deliveries < 32 weeks gestation (p = 0.001). In multivariable Poisson regression model, only neonatal intensive care unit admission rate was increased for group 1 twins (aRR = 1.27, 95% CI 1.003–1.60).
Conclusions
After adjusting for confounders, twins conceived via ART compared to non-ART had similar neonatal outcomes. These data can help when counseling this patient population and assist in planning larger prospective cohorts.
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Shah, J.S., Nasab, S.H., Chappell, N. et al. Neonatal outcomes among twins stratified by method of conception: secondary analysis of maternal fetal medicine (MFMU) network database. J Assist Reprod Genet 35, 1011–1017 (2018). https://doi.org/10.1007/s10815-018-1149-x
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DOI: https://doi.org/10.1007/s10815-018-1149-x