OBJECTIVE: To report the survival rate of oocytes and the rate of successful pregnancies
obtained from super-rapid cooling of oocytes using slush nitrogen (SN2). DESIGN …

Vitrification is now the dominant approach for cryopreservation of human oocytes and
embryos; however, serious disagreement persists, particularly about biosafety issues …

Oocyte cryopreservation has practical, legal and ethical advantages compared with embryo
storage. It allows oocytes to be quarantined before donation, as is already mandatory for …

Objective: To evaluate the developmental competence of vitrified human oocytes thawed
using two different methods to establish an effective cryopreservation protocol. Design: In …

STUDY QUESTION Is transfer of vitrified blastocysts associated with higher perinatal and
maternal risks compared with slow-frozen cleavage stage embryos and fresh blastocysts …

The advent of vitrification has transformed the therapeutic landscape in assisted
reproductive technology. Clear evidence for this is provided by the dramatic rise in the …

STUDY QUESTION Is embryo vitrification associated with a higher risk of adverse perinatal
outcomes than slow-freezing? SUMMARY ANSWER Embryo vitrification was not associated …

The development of an effective oocyte-freezing program will have a major impact on
clinical practice in reproductive medicine and will serve as a powerful tool to preserve fertility …

Aim. The aim of this article is to review the evidence regarding human oocyte
cryopreservation by slow freezing and vitrification and to provide evidence-based clinical …

Purpose To study the efficacy and efficiency of a “universal warming protocol” for vitrified
human embryos, based on subsequent steps with 1 and 0.5 M concentration of extracellular …