Clinical analysis of spontaneous pregnancy reduction in the patients with multiple pregnancies undergoing in vitro fertilization/intracytoplasmic sperm injection-embryo transfer.

Abstract

SPR rate is related to age and the initial number of gestational sacs. Both SPR and MFPR can improve pregnancy outcomes. The later the SPR occurs, the worse the neonatal outcomes are. Due to the possibility of SPR, it is necessary to appropriately delay MFPR until 8 gestational weeks.