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Related Experiment Videos

Increasing the human menopausal gonadotropin dose--does the response really improve?

C Pantos1, S J Thornton, A L Speirs

  • 1Royal Women's Hospital, Reproductive Biology Unit, Carlton, Victoria, Australia.

Fertility and Sterility
|March 1, 1990
PubMed
Summary

Increasing human menopausal gonadotropin (hMG) dosage beyond 150 IU/day in women undergoing fertility treatments like in vitro fertilization did not improve egg yield. Follicular development may limit response to higher hMG doses.

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Area of Science:

  • Reproductive Endocrinology
  • In Vitro Fertilization
  • Assisted Reproductive Technology

Background:

  • Optimizing ovarian stimulation is crucial for successful in vitro fertilization (IVF) and other assisted reproductive technologies (ART).
  • Human menopausal gonadotropin (hMG) is a commonly used gonadotropin for ovulation induction.
  • Previous attempts to enhance egg yield through increased hMG dosage have yielded variable results.

Purpose of the Study:

  • To evaluate the efficacy of increasing human menopausal gonadotropin (hMG) dosage in patients undergoing hyperstimulation for fertility treatments.
  • To determine if higher hMG doses improve oocyte retrieval rates compared to a standard dose.

Main Methods:

  • A cohort of 271 patients with prior hyperstimulation cycles were studied.

Related Experiment Videos

  • Patients received clomiphene citrate and 150 IU/day of hMG in their first cycle.
  • In a subsequent cycle, 45% of patients received an increased hMG dose to assess its impact on egg yield.

    • Main Results:

    • The median number of eggs retrieved remained consistent at 6 in both cycles (standard vs. increased hMG dose).
    • Rates of no eggs retrieved, retrieval of only one or two eggs, and cycle cancellation were similar between the two dosage protocols.
    • Increasing hMG dosage above 150 IU/day did not significantly alter the overall population response in terms of egg yield or cycle outcomes.

    Conclusions:

    • Increasing hMG dosage beyond 150 IU/day does not appear to enhance egg retrieval in patients undergoing ovarian hyperstimulation for fertility treatments.
    • Individual differences in follicular development may be a limiting factor in response to gonadotropin therapy, irrespective of dosage.
    • The findings suggest that a standard hMG dosage may be sufficient, and higher doses may not offer additional benefits for egg yield.