Journal of assisted reproduction and genetics · 2018
First trimester pregnancy ultrasound findings as a function of method of conception in an infertile population.
СтатьяНаблюдательное исследованиеНазвание и аннотация: Перевод в очереди
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von Versen-Höynck Frauke, Petersen Jenna S, Chi Yueh-Yun, Liu Jing, Baker Valerie L
Аннотация
PURPOSE: The aim of this study was to determine whether first trimester ultrasound measurements of crown rump length (CRL) and gestational sac diameter (GSD) differ depending on the method of conception among infertile women.
METHOD: Infertile women, ages 21-50 years old, who conceived viable, singleton pregnancies via fresh embryo transfer (ET), frozen ET, non-in vitro fertilization (IVF) fertility treatment, or spontaneously were included in this observational cohort study at an academic fertility practice. Embryonic growth trajectories defined by the CRL and GSD at 6 and 8 weeks' gestation were analyzed and compared among the methods of conception.
RESULTS: Crown rump length at 6 weeks' gestation was smaller for conceptions achieved via fresh ET compared with frozen ET in a natural cycle (1.50 vs. 2.50 mm, p = 0.017). Crown rump length was smaller at 8 weeks' gestation in conceptions achieved via fresh ET compared to frozen ET in a programmed cycle (16.13 vs. 17.02 mm, p = 0.039).
CONCLUSION: Among infertile women, embryo growth may differ between fresh and frozen ET as early as 6 and 8 weeks' gestation.
METHOD: Infertile women, ages 21-50 years old, who conceived viable, singleton pregnancies via fresh embryo transfer (ET), frozen ET, non-in vitro fertilization (IVF) fertility treatment, or spontaneously were included in this observational cohort study at an academic fertility practice. Embryonic growth trajectories defined by the CRL and GSD at 6 and 8 weeks' gestation were analyzed and compared among the methods of conception.
RESULTS: Crown rump length at 6 weeks' gestation was smaller for conceptions achieved via fresh ET compared with frozen ET in a natural cycle (1.50 vs. 2.50 mm, p = 0.017). Crown rump length was smaller at 8 weeks' gestation in conceptions achieved via fresh ET compared to frozen ET in a programmed cycle (16.13 vs. 17.02 mm, p = 0.039).
CONCLUSION: Among infertile women, embryo growth may differ between fresh and frozen ET as early as 6 and 8 weeks' gestation.