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What is ovulation induction?

Ovulation induction is the process of using medications to stimulate ovulation in women who have irregular or absent ovulation (anovulation). According to the National Institutes of Health, 25 to 30 percent of women with infertility have problems with ovulation.

Normal ovulation occurs when the ovary releases a mature egg in preparation for that egg to be fertilized. Normal ovulation occurs roughly once every 28 days during a woman’s menstrual cycle. Intervals of 21 to 35 days are considered acceptable and reflective of normal ovulation. If fertilization does not occur, the mature egg and any supplementary tissues are broken down and cleared from the uterus naturally.

When ovulation happens less than once every 35 days or is unpredictable, it is considered to be irregular. When ovulation is completely unpredictable – in interval or duration – it is considered oligoovulation. If it doesn’t occur at all, it is called anovulation. Ovulatory problems impact fertility by taking away the predictability of ovulation and potentially the availability of an egg to be fertilized.

The goal of ovulation induction is to increase a woman’s chances of conceiving a child, either through sexual intercourse or by using intrauterine insemination (IUI) or another fertility treatment. However, when the absence of ovulation is a symptom of another fertility issue, treating the underlying problem can also restore normal ovulation and fertility.

Who could benefit from ovulation induction

Ovulation induction is a common treatment for women with absent or infrequent ovulation. Women with ovulation-interrupting disorders such as PCOS can also benefit from ovulation induction.

Ovulation induction also works in conjunction with in vitro fertilization (IVF) by stimulating multiple mature eggs to release for collection and use in lab fertilization. This is typically called controlled ovarian hyperstimulation.

When determining whether or not to use ovulation induction, physicians usually look at:

  • Disorders that can directly inhibit normal ovulation such as PCOS.
  • A woman’s hormone levels, specifically the presence of FSH), AMH and LH.
  • Disorders than can indirectly affect ovulation, such as thyroid disorders, eating disorders and obesity.
  • The amount of exercise a woman does.

For women who continue to experience abnormal ovulation after ovulation induction treatment, physicians can also try superovulation. Superovulation uses the human chorionic gonadotropin hormone to induce the release of potential mature eggs in the follicle.

Risks and side effects of ovulation induction

Ovulation induction medications can sometimes cause OHSS. The side effects of OHSS range from mild to severe, and usually fade after a few weeks without treatment. They can include:

  • Bloating.
  • Nausea.
  • Loss of breath.
  • Hot flashes.
  • Weight gain.
  • Tenderness in the pelvic region.
  • Blurry vision.

The ovarian superovulation treatment can cause multiple eggs to release, increasing the chance of multiple fertilized eggs (embryos) and a high-risk pregnancy.

Benefits of ovulation induction

Ovulation induction is usually one of the first treatments used for infertility because it is noninvasive and relatively low cost compared with other fertility treatments, such as IVF that includes costs of tests, medications, minor procedures and lab work.

For more severe cases of anovulation or other causes of infertility, ovulation induction can also be an effective treatment in conjunction with IVF, intrauterine insemination (IUI) and other holistic treatments.

Copyright 2022. All Right Reserved. Dr Nidhi Sharma

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