Does transient hyperprolactinemia during ovarian hyperstimulation interfere with conception or pregnancy outcome?

Area of Science:

• Reproductive Endocrinology
• In Vitro Fertilization (IVF)

Background:

• The impact of transiently increased serum prolactin (PRL) on in vitro fertilization (IVF) pregnancy rates remains unclear.
• Understanding hormonal fluctuations during IVF is crucial for optimizing conception success.

Purpose of the Study:

• To investigate the relationship between serum prolactin levels and pregnancy outcomes in women undergoing IVF.
• To compare prolactin levels in pregnant IVF patients versus matched non-pregnant controls.

Main Methods:

• A comparative study involving 37 pregnant IVF cycles and 74 non-pregnant cycles.
• Serum prolactin (PRL) and estradiol (E2) levels were measured before ovarian stimulation and after human chorionic gonadotropin (hCG) administration.
• Statistical analysis was performed to compare hormonal levels and pregnancy rates.

Main Results:

• No significant difference in baseline PRL levels was observed between pregnant and non-pregnant groups.
• Significantly higher PRL levels were found in pregnant women post-hCG compared to non-pregnant controls (P < 0.005).
• Elevated PRL levels post-hCG were more prevalent in pregnant women (49%) than non-pregnant women (28%) (P < 0.05).

Conclusions:

• Transiently elevated prolactin levels after hCG administration are associated with successful conception in IVF.
• The study does not support the use of dopamine agonists for treating transient hyperprolactinemia in IVF patients.
• Further research may explore the precise role of midcycle prolactin surges in IVF success.