First polar body morphology and blastocyst formation rate in ICSI patients

Evaluating the Role of First Polar Body Morphology on Rates of Fertilization and Embryo Development in ICSI Cycles

BACKGROUND Recent studies have demonstrated that morphology of the first polar body (1(st)PB) is related to oocyte viability, which can be used as a prognostic tool to predict oocyte performance and pregnancy outcomes in an intracytoplasmic sperm injection (ICSI) program. According to some studies, there is a correlation between oocyte performance and 1(st)PB morphology, while others have not r...

Optimal ICSI timing after the first polar body extrusion in in vitro matured human oocytes.

BACKGROUND This study was conducted to investigate the fertilization and embryo development of human oocytes injected at different time intervals after extrusion of the first polar body (PB) following in vitro maturation (IVM) in IVM cycles. Also, we evaluated whether spindle imaging could serve as a tool to determine the optimal ICSI time. METHODS Oocytes were collected from 43 women with po...

Does severe teratozoospermia affect blastocyst formation, live birth rate, and other clinical outcome parameters in ICSI cycles?

OBJECTIVE To determine if strict morphology correlates with outcome parameters in couples undergoing intracytoplasmic sperm injection (ICSI). DESIGN Retrospective review. SETTING Academic nonprofit IVF center. PATIENT(S) Couples undergoing IVF/ICSI. INTERVENTION(S) In vitro fertilization and ICSI. MAIN OUTCOME MEASURE(S) Samples were evaluated for total sperm count, motlity, progressi...

Evaluating the Role of First Polar Body Morphologyon Rates of Fertilization and Embryo Development inICSI Cycles

Synchrony of the first division as an index of the blastocyst formation rate during embryonic development

Purpose To devise an uninvasive selection system for human embryos with high developmental potential after a single oocyte retrieval cycle by comparing the in vitro and in vivo effectiveness of first division synchrony against subsequent embryonic developmental stages. Methods The effects of using assisted reproductive technology on 948 embryos that were produced in 137 cycles were examined b...