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Pregnancies without corpus luteum rescue.

N Naaktgeboren1, P Devroey, A Wisanto

  • 1Center for Reproductive Medicine, University Hospital and Medical School, Vrije Universiteit Brussel, Belgium.

Annales De Biologie Clinique
|January 1, 1987
PubMed
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Corpus luteum rescue failure in early pregnancy after ovarian stimulation led to luteal phase defect. Subsequent stimulation during pregnancy resulted in ovulation and new pregnancies, with mixed outcomes.

Area of Science:

  • Reproductive Endocrinology
  • Infertility
  • Assisted Reproductive Technologies

Background:

  • Ovarian stimulation protocols are widely used in assisted reproductive technologies.
  • Implantation timing and corpus luteum function are critical for early pregnancy maintenance.
  • Luteal phase defect can compromise early pregnancy outcomes.

Purpose of the Study:

  • To describe four cases of early pregnancy following ovarian stimulation with delayed implantation.
  • To investigate the impact of failed corpus luteum rescue on pregnancy.
  • To examine the consequences of repeat ovarian stimulation during early pregnancy.

Main Methods:

  • Case series describing four pregnancies after ovarian stimulation.
  • Monitoring of serum human chorionic gonadotropin (hCG) and steroid hormones.

Related Experiment Videos

  • Assessment of corpus luteum function and progesterone production.
  • Observation of follicular development and ovulation during pregnancy.

    • Main Results:

    • Four pregnancies occurred after ovarian stimulation with delayed implantation and failed corpus luteum rescue.
    • No progesterone production was observed in the first 9-13 days of pregnancy in any case.
    • Three patients experienced new follicular development and ovulation during pregnancy due to renewed stimulation.
    • Two clinical pregnancies resulted from the second stimulation, one with successful delivery and one early abortion; two preclinical abortions occurred.

    Conclusions:

    • Delayed implantation after ovarian stimulation can lead to corpus luteum dysfunction and luteal phase defect.
    • Repeat ovarian stimulation during early pregnancy can induce ovulation, potentially leading to new pregnancies.
    • Pregnancy outcomes in these cases were variable, highlighting the challenges of managing luteal phase defects.