How does the thickness of the inner layer of the uterus change during the menstrual cycle?
In order to determine the cause of the development of the reproductive system, the norm of the size of the endometrium was established, which varies by the day of the cycle.
To carry out these calculations, ultrasound is used, on which the inner layer of the uterus is inspected. Access is through the vagina.
At the very beginning of the cycle, endometrial cells are visualized on the monitor of the apparatus, as some structures that do not have a uniform consistency. Most often at this stage, the thickness of the layer does not exceed 0.5-0.9 cm. The fact that the inner layer itself does not have a clear layer structure is also a feature. cells do not reside in levels, as usual.
Already on day 3-4 the endometrium begins to be organized, because cells have a more distinct structure. However, there is a slight decrease in the thickness of the inner shell. Now the layer of the endometrium does not exceed 0.3-0.5 cm in thickness.
On day 6-7, a slight thickening occurs, up to 6-9 mm. And only by the 10th day on the ultrasound begins to manifest a clear echogenic structure in its central part. The thickness of the endometrium is 8-10 mm.
By 10-14 days the layer becomes equal to 9-14 mm. Throughout all subsequent stages of secretion, the endometrium has a similar structure, increasing only in thickness. So at day 18, it reaches 10-16 mm, at 19-23 - 20 mm. Then, by 24-27 day, the thickness begins to decrease - up to 10-18 mm.
Why there is a violation of the thickness of the endometrium?
According to the above, the growth of the endometrial layer occurs on the days of the cycle in the direction of its increase. However, in practice it is not always so, and there are many reasons why the thickness of the inner layer of the uterus can change. It can be:
- dyshormonal events caused by insufficiency of the luteal new phase;
- various injuries of the endometrium (as a result of scraping, surgical interventions on the pelvic organs);
- congenital hypogormonal conditions, in particular uterine hypoplasia;
- violation of the blood flow of the pelvic organs, which can be an innate or acquired pathology.
Only after the cause of this disorder is established, the doctor prescribes treatment, based on the characteristics of the body and the individual tolerability of the drug. To simplify the process, and accurately determine the norm, a table was compiled in which the thickness of the endometrium is indicated by the day of the cycle.
What can lead to a violation of the thickness of the endometrium?
Many women who are being screened for the thickness of the endometrium do not always understand why this parameter is so important. The fact is that it is the inner layer of the uterus that takes a direct part in the process of fertilization.
In addition, the refined endometrium is a target for various infections and microorganisms that can enter the uterine cavity from the outside.
Thus, such a parameter as the thickness of the endometrium plays an important role. From his condition depends not only the health and well-being of women, but also the fact whether she can become a mother. Therefore, when planning pregnancy, the state of the endometrium is given special attention.