Cumulative live birth rates after fresh and vitrified cleavage-stage versus blastocyst-stage embryo transfer in the first treatment cycle (original) (raw)

Human reproduction (Oxford, England), 2016

Abstract

Do cumulative live birth rates differ between single cleavage-stage Day 3 transfer and single blastocyst-stage Day 5 transfer? Cumulative live birth rates after Day 3 and 5 transfers were similar in young patients when the vitrified embryo transfers were also taken into account. Previous evidence has shown that the probability of live birth following IVF with a fresh embryo transfer is significantly higher after blastocyst-stage Day 5 transfer. However, because the introduction of vitrification has enhanced the survival of cryopreserved embryos and improved pregnancy rates, the optimal outcome measure for this comparison should now be cumulative live birth rates, as these include the eventual contribution of vitrified-warmed embryos. Our retrospective study included first IVF/ICSI cycles performed between January 2010 and December 2013 at a tertiary care centre. All patients were scheduled for fresh single embryo transfer, either on Day 3 (n = 377) or on Day 5 (n = 623). Both IVF an...

Lisbet Landuyt hasn't uploaded this paper.

Let Lisbet know you want this paper to be uploaded.

Ask for this paper to be uploaded.