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Minerva Obstetrics and Gynecology 2022 April;74(2):178-85

DOI: 10.23736/S2724-606X.21.04806-5

Copyright © 2021 EDIZIONI MINERVA MEDICA

language: English

Ovarian hyperstimulation syndrome and adverse pregnancy outcome

Danilo BUCA 1, Francesco D’ANTONIO 1, Marco LIBERATI 1, Sara TINARI 1, Giorgio PAGANI 2, Pantaleo GRECO 3, Luigi NAPPI 4

1 Center for Fetal Care and High-Risk Pregnancy, Department of Obstetrics and Gynecology, University of Chieti, Chieti, Italy; 2 Department of Obstetrics and Gynecology, Poliambulanza Foundation, Brescia, Italy; 3 Section of Obstetrics and Gynecology, Department of Morphology, Surgery, and Experimental Medicine, Sant’Anna University Hospital, University of Ferrara, Ferrara, Italy; 4 Unit of Fetal Medicine, Department of Obstetrics and Gynecology, University of Foggia, Foggia, Italy



INTRODUCTION: The aim of this study was to investigate the association between ovarian hyperstimulation syndrome (OHSS) and adverse pregnancy outcome.
EVIDENCE ACQUISITION: Medline, Embase and Cochrane databases were searched. The primary outcome was a composite score of adverse maternal outcome including either preterm birth (PTB), gestational diabetes mellitus (GDM), pre-eclampsia (PE) or pregnancy induced hypertension, intrahepatic cholestasis of pregnancy, thromboembolic events or need for caesarean section (CS). Secondary outcomes were a composite score of adverse fetal outcome including either miscarriage, low birthweight, fetal anomalies or intrauterine fetal death (IUD) and the individual components of both primary and secondary outcomes.
EVIDENCE SYNTHESIS: Thirteen studies (3303 ART pregnancies with and 89,720 without OHSS) were included. The risk of composite adverse maternal outcome (RR: 8.8, 95% CI: 8.1-9.5) was higher in women with compared to those without OHSS. The association between OHSS and adverse pregnancy outcome was mainly due to the higher risk of PTB (RR: 11.4, 95% CI: 10.5-12.4), while there was no difference in the risk of others primary outcome. Likewise, the risk of composite fetal outcome was higher in pregnancies with a prior OHSS (RR: 1.5, 95% CI: 1.1-2.0). The strength of association between OHSS and composite adverse maternal outcome persisted when considering singleton pregnancies or those with severe disease.
CONCLUSIONS: Pregnancies complicated by OHSS are at high risk of adverse pregnancy outcome, especially PTB.


KEY WORDS: Ovarian hyperstimulation syndrome; Pregnancy outcome; Review

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