Frozen-thawed embryo transfer and live birth: Long-term follow-up after one oocyte retrieval.

Frozen-thawed embryos accounted for 39% (249 of 639) of live births from 931 consecutive first oocyte retrievals after median follow-up of 6.5 years with consistent use of pronuclear-stage freezing and cleavage-stage transfer. Survival after thaw was 95% (2,129 of 2,247).

Diagnosis of polycystic ovaries by three-dimensional transvaginal ultrasound.

Objective: To study diagnostic thresholds for polycystic ovary (PCO).

Design: Retrospective cohort study.

Setting: Academic hospital.

Cryosystem assessment by glucose uptake of murine blastocysts.

Glucose uptake was used as a measure of metabolic activity and implantation potential to compare vitrification and slow freezing in a prospective randomized trial using murine blastocysts. Frozen 2-cell embryos (n = 132) thawed and cultured for 48 h to the blastocyst stage were randomly divided into four groups: (i) control - not refrozen; (ii) slow freezing using a programmed rate (PR); (iii) vitrification by super-cooled (VSC) liquid nitrogen; and (iv) vitrification in liquid nitrogen (VLN). Upon re-thawing, embryos were cultured individually for 24 h to determine glucose uptake non-invasively.

Polycystic ovaries and ovarian hyperstimulation syndrome: a systematic review*.

Objectives: To assess and quantify the relationship between polycystic ovaries (PCOs) and ovarian hyperstimulation syndrome (OHSS).

Data Sources: Published studies, any language, identified through MEDLINE, EMBASE, BIOSIS, Web of Science, and bibliographies. Studies were selected if exposure (ultrasound findings of PCO before treatment) and outcome (OHSS) could be abstracted to two-by-two tables.