Clinical and neonatal outcomes of complete zona pellucida removal by laser-assisted hatching after single vitrified-warmed blastocyst transfer.

Laser-assisted hatching (LAH) is a widely used and unavoidable technique in assisted reproductive technology after frozen embryo transfer (FET). We aimed to investigate the safety and efficacy of completely ZP (zona pellucida) removed by an assisted laser group compared to an intact group after FET. This retrospective study involved 320 SVBT  single vitrified-warmed blastocyst transfers of 213 patients who underwent clomiphene citrate (CC) based minimal stimulation protocol.

The trophectoderm could be better predictable parameter than inner cellular mass (ICM) for live birth rate and gender imbalance.

Selection of best blastocyst is crucial in single blastocyst transfer cycles, which is based on blastocyst morphological parameters such as inner cell mass (ICM), trophectoderm (TE) and its inner diameter. We aimed to study relation between morphological parameter and sex ratio after single vitrified-warmed blastocyst transfer (SVBT). Current study based on data of single-center and performed by retrospective analysis of 1563 SVBT (911 patients) with minimal stimulation on 5th and 6th days.