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The GnRH agonist trigger: A revolution in IVF

Treatment In the world of fertility treatments, innovations can change everything. One such innovation is the GnRH agonist (GnRHa) trigger protocol, which has transformed how we approach in vitro fertilisation (IVF), particularly in preventing ovarian hyperstimulation syndrome (OHSS) and enhancing reproductive outcomes. The GnRHa trigger protocol emerged as a solution to prevent OHSS, a serious complication of IVF characterised by enlarged ovaries and fluid accumulation. Traditionally, human chorionic gonadotropin (hCG) was used to trigger egg maturation, but it posed risks for OHSS. GnRHa trigger works differently, causing a temporary flare-up of hormones similar to a natural cycle, but with…

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 GnRH Agonists and Antagonists — Roles in Management

Both have advantages. Antagonist protocols are safer for high responders and PCOS patients. Agonist protocols are beneficial for poor responders, endometriosis, or adenomyosis.

Articles of Interest

A boon for infertility patients: Ovarian stimulation with GnRH antagonist

GnRH antagonists in ovarian stimulation for IVF is a very friendly protocol, requiring smaller dose of gonadotropins and shorter stimulation period, requiring only 2–3 times of follicular monitoring in experienced hands with good pregnancy rate.

Balancing Hormones: The Role Of GnRH Agonists And Antagonists In Fertility Treatment

GnRH agonists, such as leuprolide and goserelin, work by initially stimulating the release of FSH and LH. However, with continued use, they suppress the production of these hormones, effectively creating a temporary “pause” in the menstrual cycle. This controlled suppression is crucial in fertility treatments such as in vitro fertilization (IVF).

Can GnRH Antagonists Boost Your IVF Success?

However, clinical experience with GnRH antagonists in IVF treatment thus far has shown mixed results, with no evidence that they are any better than the traditional GnRH analogues. They seem to be as good; but are more expensive; and do offer an additional option which may be useful in selected patients.

GnRH Agonist Therapy

To prevent a premature LH surge and to help induce uniform follicle development. A fairly high number of women undergoing ovarian stimulation with Bravelle, (20 -50 %) respond in an unsatisfactory manner. The number of oocytes retrieved, fertilization rates, and implantation rates may be improved. Lupron appears to decrease cancellation rates during ovulation induction and to increase pregnancy rates through uniform folliculogenesis.

Long‐term GnRH agonist therapy before in vitro fertilisation (IVF) for improving fertility outcomes in women with endometriosis

Contrary to previous findings, we are uncertain as to whether long‐term GnRH agonist therapy impacts on the live birth rate or indeed the complication rate compared to standard IVF/ICSI.

Use of GnRH antagonists vs agonists protocol for IVF/ICSI in the real world – experience of over 11,000 cycles

GnRH antagonists tended to be used in patients with poorer prognosis than patients treated with a GnRH agonist. Upon adjusting for patient characteristics, ongoing pregnancy rates are comparable between patients receiving GnRH antagonist and agonist protocols. Patients treated with GnRH antagonists showed better persistency and had a shorter period of time after a failed cycle before starting a new cycle.

What is GnRH and How Does it Impact Fertility?

GnRH is the start of the complex series of hormonal signals that control essential facets of reproduction in both men and women. It starts being produced at a higher level in the body when puberty begins in adolescence. When GnRH is released from the hypothalamus, it triggers the pituitary gland to release two key hormones for reproduction: Follicle-stimulating hormone (FSH) and Luteinizing hormone (LH)