IVF ultrasound monitoring How big are the follicles?

From the original follicle to the mature ovulation preparation, the follicle takes about six months to a year. However, during IVF, the doctor will tell you which time period to go back to ultrasound monitoring.

If you are undergoing IVF assisted fertility treatment, during the hyperovulation induction phase, the doctor will monitor the development of the follicles through multiple ultrasounds, count the number of follicles in development, and make certain measurements, usually the unit of the follicle is millimeters (mm). When the follicle is about to reach full maturity, the doctor will want to arrange a trigger injection or HCG/LH injection. The size of the mature follicle that is about to ovulate is between 18 and 22 mm.

How big is the follicle for IVF ultrasound monitoring?

Just because you get more eggs doesn't mean you're going to be good

During IVF hyperovulation induction treatment, between 8 and 15 follicles is considered an acceptable amount. The larger the number of follicles, the more embryos formed, the more embryos available for later transfer, and the chance of success is also one point higher. But it does not mean that the more follicles the better, like some patients who get more than 20 eggs or more than 30 are likely to be polycystic ovaries, the more follicles obtained at this time does not mean that the quality is better.

Strictly follow the doctor's advice and arrange the time for egg retrieval

After entering the IVF cycle, the doctor needs to combine the hormone level and the development of the follicle to determine the timing of ovulation induction, the dose of ovulation induction drugs, and the time of application, and then adjust the medication according to the patient's own situation until the follicles grow to the right size, use HCG to promote follicles to maturity, and then perform egg retrieval under ultrasound guidance.

B ultrasound monitoring examination is carried out in the ovulation promotion stage, mainly to monitor the development of follicles in real time, which is to facilitate doctors to confirm whether it is necessary to adjust the dose of medication according to the size, morphology and growth rate of follicles. In addition, if most follicles under ultrasound monitoring reach about 18-22 mm in size, that is, mature follicles are judged, doctors can arrange the time for night injections and egg retrieval.