| Table 1. Nomenclature of the morphokinetic parameters studied. Description of the parameters obtained from ESHRE Working group on Time-lapse technology et al . (2020). | |
| Morphokinetics parameters | Description |
|---|---|
| tPB2 | The second polar body is completely detached from the oolemma (h) |
| TPNa | Appearance of individual pronuclei; tPN1a, tPN2a, tPN3a, ... (h) |
| TPNf | Time frame of pronuclei fading; tPN1f; tPN2f... (h) |
| t2 | Embryonic division time from fertilization to 2 cells (h) |
| t3 | Embryonic division time from fertilization to 3 cells (h) |
| t4 | Embryonic division time from fertilization to 4 cells (h) |
| t5 | Embryonic division time from fertilization to 5 cells (h) |
| t6 | Embryonic division time from fertilization to 6 cells (h) |
| t7 | Embryonic division time from fertilization to 7 cells (h) |
| t8 | Embryonic division time from fertilization to 8 cells (h) |
| t9+ | Embryonic division time from fertilization to 9 cells (h) |
| tSC | First evidence of compaction (h) |
| tM | Time of completion of compaction process (h) |
| tSB | Initiation of blastulation (first frame in which the blastocoel is visible)(h) |
| tB | Full blastocyst (last frame before zona starts to thin) (h) |
| tEB | Time of expanded blastocyst formation (h) |
| tHB | Fully hatched blastocyst (h) |