Abstract
To evaluate the preterm delivery and other obstetrics complications similar in singleton pregnancies achieved through IVF compared to spontaneous pregnancies. Retrospective case-control study included 1663 women with singleton pregnancies following IVF-ICSI (study group) and 3326 women with singleton spontaneous pregnancies (control group) who delivered between January 2015 and January 2018 at the Peking University Third Hospital. The control group matched 1:2 by age, BMI, parity, and gravidity. Maternal outcomes included preterm delivery and complications. There was significantly higher incidence of gestational diabetes, hypertensive disorders, and placenta previa in IVF-ICSI pregnancies versus controls (p < .05). IVF-ICSI resulted in significantly higher rate of preterm birth than in spontaneous pregnancies (p < .05) and the difference remained significant for deliveries that occurred before 28, 32, and 34 weeks gestation (p < .05). Multivariate logistic regression analysis revealed that female-factor infertility, hypertensive disorder, placenta previa, and PROM were significant prognostic factors associated with increased risk of prematurity. IVF-ICSI is associated with increased risk of obstetric complications including preterm delivery in singleton pregnancies. Female-factor infertility is an independent prognostic factor for preterm birth. This information is important for patient counseling and helps to refine the recommendation to optimize maternal health before embarking on fertility treatments.
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