[Dual trigger with gonadotropin-releasing hormone agonist and hCG to improve oocyte maturation rate].

Objective: This study investigates dual trigger with GnRHa and hCG as a potential treatment in patients with a history of ≥25 % immature oocytes retrieved in IVF/ICSI cycles.

Methods: This is a retrospective case-control study performed between October 2008 and December 2017. Forty-seven patients who experienced high oocyte immaturity rate (≥25 %) during their first IVF/ICSI cycle (analyzed as control group) and received a dual trigger for their subsequent cycle, were involved.