cumulative embryo score (ces) is one of the many embryo scoring methods which have been developed to help clinicians to transfer high quality embryos and predict pregnancy rate in assisted reproductive techniques (art) cycles. regarding the existing difference in ces calculation this study was done to compare two methods in order to determine the more practical and preferable one. in a retrospe...

Background: One of the main problems in ART is low pregnancy rates. The factors involved in successful pregnancy include; 1. mother related factors such as the status of endometrial receptivity and hormonal status of the mother. 2. embryo related factors such as; number of transferred embryo, embryo scores including: number and size of the blastomeres, and their fragmentation. The aim of the pr...

introduction: the aim of this study was to evaluate the effect of sperm protamine deficiency on fertilization and embryo development post icsi. material and methods: semen samples from 27 patients candidate for icsi were assessed for semen parameters. sperm processing was carried out using pure sperm and percentage of protamine deficient sperm was assessed by chromomycin a3 post processing. cor...

BACKGROUND Embryos selection is crucial to maintain high performance in terms of pregnancy rate, reducing the risk of multiple pregnancy during IVF. Pronuclear and nucleolar characteristics have been proposed as an indicator of embryo development and chromosomal complement in humans, providing information about embryo viability. METHODS To correlate the zygote-score with the maternal age and ...

BACKGROUND Many factors from the oocyte/sperm or the process of fertilization may affect the zygote formation. The zygote score (Z-score) describes the quality of a human zygote based on its pronuclear morphology, nucleolar precursor bodies, and alignment of polar bodies, and it can be used in the selection process at the zygote stage for embryo transfer or cryopreservation. OBJECTIVE The aim...

OBJECTIVE The correlation of the embryo matrix metalloproteinase-9 (MMP-9) secretion, embryonic development and clinical pregnancy was investigated. MATERIALS AND METHODS The embryo culture from in vitro fertilization-embryo transfer (IVF-ET) patients were collected in the Xuzhou Central Hospital from January 2013 to September 2014. At the same time, the embryo grade was recorded. The secreti...

In order to achieve a clinical pregnancy rate higher than that achieved following initial adoption of in-vitro fertilization embryo transfers, more than one embryo is transferred. This has led to a substantial increase in unwanted multiple pregnancy rates with IVF as compared with natural conception. What is therefore required is a simple, clinically useful embryo scoring system, to reflect emb...