What Is The Expansion Of The Cervical Canal

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What Is The Expansion Of The Cervical Canal
What Is The Expansion Of The Cervical Canal

Video: What Is The Expansion Of The Cervical Canal

Video: Stenosis of the cervical canal. Expansion under hysteroscopic control. 2022, December
Anonim

The cervical canal is the cervical canal that connects the vagina and the uterine cavity. It has a fusiform shape. To gain access to the uterine cavity, the doctor performs a procedure to expand the cervical canal.

What is the expansion of the cervical canal
What is the expansion of the cervical canal

Why is the expansion of the cervical canal

Normally, the cervical canal is tightly closed in order to prevent infection from entering the uterine cavity. The surface of the mucous membrane of the cervical canal is lined with a cylindrical epithelium that produces mucus. It has a porous structure, fills the cervix, forming a kind of plug. The viscosity of mucus and pore size depend on hormone levels. During ovulation, the viscosity decreases and the pore size increases, this facilitates the passage of sperm. The mucus flow is directed outward, it is more pronounced along the periphery, this helps to "filter" full-fledged sperm. During pregnancy, the cervical canal is tightly closed, it changes its color, becomes cyanotic. Before giving birth, it expands and can reach up to 10 cm in diameter.

To examine the uterine cavity, the gynecologist uses the hysteroscopy method, as the most informative for diagnosis and treatment. It allows you to detect pathology inside the uterus, diagnose, perform targeted biopsy or surgery (for example, abortion). Hysteroscopy is always preceded by a manual examination in order to determine the location of the uterus and its size. Then the expansion of the cervical canal is performed.

How is the dilatation of the cervical canal performed?

Expansion of the cervical canal for examination of the uterine cavity is carried out as follows. The patient must be in a special gynecological chair. The vagina and perineum are treated with special disinfectants as before surgery. After manual examination, the doctor exposes the cervix using mirrors. Manipulation begins by grasping the anterior lip of the cervix with forceps. The uterine cavity is then probed to determine its size and direction. After that, the cervical canal is sequentially expanded to 8 mm with special dilator instruments. Then hysteroscopy is performed.

If the purpose of the expansion of the cervical canal is curettage, a sharp curette is inserted into the uterine cavity to the bottom of the cavity. Further, by successive movements of the instrument back and forth, curettage of the walls of the uterus is carried out to obtain the greatest amount of scraping. After that, the cervix is ​​treated with a special solution. Curettage is performed to stop dysfunctional uterine bleeding and to remove the maximum amount of hyperplastic and necrotic endometrium for further histological examination. This procedure results in the cessation of heavy bleeding for several months.

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