ABSTRACT
There have been several studies on TLT in the last decade regarding blastocyst formation, blastocyst quality, pregnancy, implantation, live birth, aneuploidy, and other patient characteristics to measure the benefit and usefulness of the system through morphokinetic parameters and other observations which were not possible with conventional morphology and incubators. The authors analysed 191 embryos and indicated t4 and s3 as the most relevant kinetic parameters with respect to implantation. The authors concluded that these markers were not predictors of implantation, but that they could predict embryo development to the blastocyst stage. In this study, the only predictor marker of implantation and production of a viable pregnancy was cc3. The aim of the study was to prove if an automatic time-lapse test (TL test) combined with traditional morphology improves day-3 implantation rates compared with morphology alone.
