Triggering Ovulation in Normo-responders Using a Modified Dual Trigger Protocol or HCG Trigger

Triggering Ovulation in Normo-responders Using a Modified Dual Trigger Protocol or HCG Trigger . A Randomized Controlled Study

The aim of this randomized controlled study is to compare the efficacy of a modified dual trigger protocol [a single bolos of HCG combined with two successive doses of a GnRH agonist ] with HCG [a single bolos administered 36 hours before oocyte retrieval ] in triggering ovulation in normo-responders undergoing ovarian stimulation using the antagonist protocol.

Inclusion Criteria:

• GnRH antagonist IVF cycle
• Normo-responders to induction of ovulation

Exclusion Criteria:

• Hypogonadotrophic hypogonadism
• Endometriosis
• History of recurrent abortion