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Abstract
Objective: We sought to determine subsequent pregnancy outcomes in a cohort of women with a history of unexplained recurrent miscarriage (RM) who were not receiving medical treatment.
Study design: This was a prospective cohort study, of women with a history of three unexplained consecutive first trimester losses, who were recruited and followed in their subsequent pregnancy. Control patients were healthy pregnant patients with no previous adverse perinatal outcome.
Results: A total of 42 patients with a history of unexplained RM were recruited to the study. About nine (21.4%) experienced a further first trimester miscarriage, one case of ectopic and one case of partial molar pregnancy. About 74% (23/31) of the RM cohort had a vaginal delivery. There was one case of severe pre-eclampsia. The RM group delivered at a mean gestational age of 38 + 2 weeks and with a mean birthweight of 3.23 kg. None of the neonates were under the 10th centile for gestational age. Overall, there was no significant difference in pregnancy outcomes between the two cohorts.
Conclusion: Our study confirms the reassuring prognosis for achieving a live birth in the unexplained RM population with a very low incidence of adverse events with the majority delivering appropriately grown fetuses at term.
Declaration of interest
The authors report no conflicts of interest. The authors alone are responsible for the content and writing of this article.