Reproductive biomedicine online
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Reprod. Biomed. Online · Apr 2019
Comparative StudyPlacental volume and other first-trimester outcomes: are there differences between fresh embryo transfer, frozen-thawed embryo transfer and natural conception?
Does mode of conception influence placental volume and other first-trimester outcomes? ⋯ Placental volume and other first-trimester parameters are modified by IVF with fresh embryo transfer and FET compared with natural conception, but with opposite trends. Given the different protocols used for these techniques, hormonal treatment per se may have a major effect on pregnancy outcomes through the modification of placental invasiveness.