Why enlarge the cervical canal
Normal cervical canal tightly closed in order to prevent the ingress into the cavity of the uterus infection. The surface of the mucous membrane of the cervical canal lined by columnar epithelium which produces mucus. She has a porous structure that fills the cervix, forming a kind of tube. The viscosity of mucus and pore size depends on the level of hormones. During ovulation, the viscosity decreases and the pore size increases, it facilitates the passage of sperm. The flow of mucus outward, it is more pronounced on the periphery, it helps "filter" full of sperm. During pregnancy the cervical canal is tightly closed, it changes its color and becomes bluish. Before birth, it expands and can reach up to 10 cm in diameter.
To inspect the cavity of the uterus, the gynecologist uses a technique of hysteroscopy as the most informative for diagnosis and treatment. It allows to detect pathology within the uterus to make a diagnosis, to perform a targeted biopsy or surgical procedure (e.g., abortion). Hysteroscopy is always preceded by a manual study to determine the location of the uterus and its size. Then carried out the expansion of the cervical canal.
How is the expansion of the cervical canal
The expansion of the cervical canal for examination of the uterine cavity is performed as follows. The patient should be on special gynecological chair. The vagina and perineum treated with special disinfectants as before surgery. After manual examination, the doctor exposes the cervix using mirrors. Manipulation begins with the capture of the anterior lip of the cervix with forceps. Then the uterine cavity probing to determine the size and direction. After that consistently expand the cervical canal to 8 mm special tools-dilatatore. This is followed by a hysteroscopy.
If the purpose of expansion of the cervical canal is curettage, the uterine cavity is injected a sharp curette to the bottom of the cavity. Further sequential movements of the tool forward and back spend curettage of the uterus to receive the greatest number of scrapings. After that, the cervix is treated with a special solution. Curettage performed for the termination of dysfunctional uterine bleeding and to remove the maximum number giperplazirovannah and necrotised endometrium for further histological examination. This procedure leads to the cessation of heavy bleeding for a few months.