Laser-assisted hatching improves pregnancy outcomes in frozen-thawed embryo transfer cycles of cleavage-stage embryos: a large retrospective cohort study with propensity score matching

Abstract excerpt

INTRODUCTION: Laser-assisted hatching (LAH) is a commonly used adjunct technique; however, its effectiveness has not been fully established. OBJECTIVE: We evaluated the effects of LAH on pregnancy outcomes in frozen-thawed embryo transfer (FET) cycles of cleavage-stage embryos. MATERIALS AND METHODS: This retrospective study involved 5779 FET cycles performed at the Reproductive and Genetic Center in the...

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