biostudies-literatureUnknown35(8)Vinals Gonzalez X<h4>Purpose</h4>The aim of the study is to investigate how blastocyst contraction behaviour affects the reproductive competence in high-quality euploid embryos.<h4>Methods</h4>Eight hundred ninety-six high-quality blastocysts derived from 190 patients (mean age 38.05 (SD = 2.9) years) who underwent preimplantation genetic testing for aneuploidies (PGT-A) from January 2016 to October 2017 were included in this study. PGT-A results were reported as euploid or aneuploid. Aneuploid embryos were sub-classified into three categories: monosomy, trisomy and complex aneuploid. Retrospective studies of time-lapse monitoring (TLM) of those embryos were analysed and reproductive outcome of transferred embryos was collected.<h4>Results</h4>A total of 234/896 were euploid (26.1%) whilst 662/896 (73.9%) Journal of assisted reproduction and genetics1509-1517https://www.ebi.ac.uk/biostudies/studies/S-EPMC6086804biostudies-literatureContraction behaviour reduces embryo competence in high-quality euploid blastocysts.PMC6086804Saab WCawood SVinals Gonzalez XSerhal PGaunt MOdia RSeshadri SfalseContraction behaviour reduces embryo competence in high-quality euploid blastocysts.<h4>Purpose</h4>The aim of the study is to investigate how blastocyst contraction behaviour affects the reproductive competence in high-quality euploid embryos.<h4>Methods</h4>Eight hundred ninety-six high-quality blastocysts derived from 190 patients (mean age 38.05 (SD = 2.9) years) who underwent preimplantation genetic testing for aneuploidies (PGT-A) from January 2016 to October 2017 were included in this study. PGT-A results were reported as euploid or aneuploid. Aneuploid embryos were sub-classified into three categories: monosomy, trisomy and complex aneuploid. Retrospective studies of time-lapse monitoring (TLM) of those embryos were analysed and reproductive outcome of transferred embryos was collected.<h4>Results</h4>A total of 234/896 were euploid (26.1%) whilst 662/896 (73.9%) 2018-01-01T00:00:00Z2018 Aug2025-04-04T08:44:06.892Z2019-08-07T07:02:09ZS-EPMC60868042998089510.1007/s10815-018-1246-x