The principle of time-lapse system is based on the continuous sensing of the development of the pre-implantation embryo and the assessment of its morphology. This is advantageous in assessing the quality and implantation potential of embryos, which are subsequently evaluated according to certain established criteria. This gives the opportunity to select the highest quality embryo to be implanted into the mother's womb during embryo transfer. This system also allows us to detect any abnormalities in embryo development. This is very important, because the occurrence of abnormalities in early embryonic cell division is quite common. Morphological evaluation of embryos indicates a high incidence of tripolar mitosis during this early embryo development. The result of this division is three blastomers instead of two, which is associated with an irregular chromosome separation, each of them may contain a different number of chromosomes. In the case where conventional embryo observation is used to observe embryo morphology at longer intervals, it may be that the changes associated with tripolar mitosis are not detected at all, and such embryos appear to be falsely prosperous and are often selected for transfer. This can have serious consequences in the case of implantation, because these embryos are not...
| Identifer | oai:union.ndltd.org:nusl.cz/oai:invenio.nusl.cz:388287 |
| Date | January 2018 |
| Creators | Jandová, Oldřiška |
| Contributors | Hlinka, Daniel, Anger, Martin |
| Source Sets | Czech ETDs |
| Language | Czech |
| Detected Language | English |
| Type | info:eu-repo/semantics/masterThesis |
| Rights | info:eu-repo/semantics/restrictedAccess |
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