Comparison of "triggers" using leuprolide acetate alone or in combination with low-dose human chorionic gonadotropin.

This retrospective study of fresh autologous blastocyst transfers in high responders compared ongoing pregnancy rates in cycles that followed trigger with GnRH agonist (GnRHa) alone with standard luteal support, GnRHa alone with enhanced luteal support, or GnRHa with concomitant low-dose hCG (dual trigger). Ongoing pregnancy rates were significantly increased with the dual trigger or with enhanced luteal support, whereas the incidence of clinically significant ovarian hyperstimulation syndrome was 0.0% in the groups receiving only GnRHa and 0.5% (1 of 182) in patients receiving GnRHa with concomitant low-dose hCG.