Effect of oocyte morphology on post-warming survival and embryo development in vitrified autologous oocytes.

Research Question: Does the presence of dysmorphisms affect post-warming survival and embryo development in vitrified autologous oocytes?

Design: A retrospective study comparing post-warming survival, fertilization and embryo development between morphologically normal (n = 269) and dysmorphic oocytes (n = 147).

Results: The survival rate was 81.4% in the morphologically normal oocytes and 87.

Outcome of cryotransfer of embryos developed from vitrified oocytes: double vitrification has no impact on delivery rates.

Objective: Evaluate the outcome of cryotransfer of embryos developed from vitrified oocytes.

Design: Retrospective cohort study.

Setting: Private university-affiliated IVF center.