Karyotype of first clinical miscarriage and prognosis of subsequent pregnancy outcome.

Reproductive Biomedicine Online
Gayathree MurugappanRuth B Lathi

Abstract

Is the karyotype of the first clinical miscarriage in an infertile patient predictive of the outcome of the subsequent pregnancy? Retrospective cohort study of infertile patients undergoing manual vacuum aspiration with chromosome testing at the time of the first (index) clinical miscarriage with a genetic diagnosis and a subsequent pregnancy. Patients treated at two academic-affiliated fertility centres from 1999 to 2018 were included; those using preimplantation genetic testing for aneuploidy were excluded. Main outcome was live birth in the subsequent pregnancy. One hundred patients with euploid clinical miscarriage and 151 patients with aneuploid clinical miscarriage in the index pregnancy were included. Patients with euploid clinical miscarriage in the index pregnancy had a live birth rate of 63% in the subsequent pregnancy compared with 68% among patients with aneuploid clinical miscarriage (adjusted odds ratio [aOR] 0.75, 95% CI 0.47-1.39, P = 0.45, logistic regression model adjusting for age, parity, body mass index and mode of conception). In a multinomial logistic regression model with three outcomes (live birth, clinical miscarriage or biochemical miscarriage), euploid clinical miscarriage for the index pregnancy was...Continue Reading

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