What does ovulation control involve?

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The aim of ovulation control is to exactly determine the day of ovulation.

  • Vaginal ultrasonography:
    used to examine the ovaries and to check the size and rate of growth of the ovarian follicle (the follicle contains the oocyte). The follicle increases in size as it matures. It is considered mature or prepared to ovulate when its diameter reaches at least 18 millimeters.
  • Urine analysis:
    serves to detect the rise in LH hormone, a hormone that increases abruptly 24 hours before ovulation.
  • Blood tests:
    serve to know the level of estrogens (estradiol), a hormone that is produced by the ovaries and increases as the ovule matures inside the follicle. It can be useful for evaluating response when ovarian stimulation treatment is given.

 

The first control is made 2 to 3 days before hypothetical ovulation. At each control, the date of the next control is set (every day when follicular size reaches 18 mm).

An average of 3 to 4 controls per cycle are usually made. The time from the first control to the day of insemination is usually 3 to 8 days.

If stimulation treatment is given, the control days and necessary doses are guided by the response observed in the ovaries.

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