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The first step of an IVF-treatment is the hormonal stimulation to gain an adequate number of mature oocytes, which are then removed from the ovaries by transvaginal puncture and fertilized by sperm in the laboratory. 2 – 5 days after fertilization, the embryos are implanted in the uterus or the intact fallopian tube (embryo transfer).
The stimulation therapy can lead to a significant enlargement of the ovaries, which may cause discomfort. However, ovarian hyperstimulation syndrome (OHSS), which requires hospital treatment, is a rare complication.
In an IVF-Naturelle treatment the extracorporal fertilization takes place during the natural menstrual cycle, without using any hormonal stimulation. The advantage of a "natural" IVF-treatment is that the oocyte has undergone the natural selection process and is therefore best for fertilization and implantation.
With IVF-Naturelle, the first consultation takes place on the 9th to 12th day of the cycle, depending on the cycle length. An ultrasound and blood test are performed during this consultation. Based on the blood tests results, the time of ovulation can usually be predicted on this day, and a second consultation is no longer necessary.
Patients who live further away can have an ultrasound and blood tests performed in their own local obstetrician and gynaecologist’s practice and send the result by e-mail. The blood levels should be available by the afternoon of the day on which the ultrasound was performed. Consequently, patients who live several hours away can also be treated.
If necessary, various steps can be taken to better control ovulation.