Objective: To report a case of severe ovarian hyperstimulation syndrome (OHSS) persisting into the late second trimester of a singleton pregnancy.
Design: Case report.
Setting: Academic tertiary care center.
Patients: A 29-year-old woman with severe OHSS after fresh embryo transfer after controlled ovarian hyperstimulation requiring intervention until 21 weeks' gestation in a singleton pregnancy.
Interventions: Thorough evaluation of an unusual case of severe OHSS and medical/procedural management of its sequelae in the setting of ongoing pregnancy.
Main outcome measuress: The clinical development of severe OHSS during pregnancy and its effect on pregnancy outcomes.
Results: Severe OHSS persisted until 21 weeks' gestation with reaccumulating ascitic fluid, which impacted pregnancy outcomes.
Conclusions: Clinicians should be aware of the risk of severe OHSS and its possible effect on pregnancy outcomes beyond the first trimester.
Keywords: FET; IVF; Ovarian hyperstimulation syndrome; frozen embryo transfer; in vitro fertilization.
© 2022 The Authors.