The intrauterine system 'Mirena'. Instructions

"Mirena" is the intrauterine contraceptive spiral. Being a hormonal drug, it provides long-term, reversible protection from unwanted pregnancy for five years.

"Mirena", being a polymeric carrier, contains levonorgestrel in one intrauterine system. The release rate of the component is 20 μg per day.

"Mirena". Instructions. Action and properties.

The vertical part of the spiral (rod) is represented by an elastic plastic cylinder. It contains the hormone levonorgestrel. The system is in the form of the letter T. Thus, it is more consistent with the shape of the uterus. The lower end of the vertical part contains a loop. To her, threads are attached to remove the spiral.

Levonorgestrel is considered the most studied gestagen, a hormone similar to natural progesterone. This component is used in many contraceptives. The container containing levonorgestrel is covered with a special membrane. Continuous controlled diffusion of the hormone is carried out through it. The release (release) of levonorgestrel into the uterine cavity is carried out in small amounts, evenly, at a constant rate, daily.

The contraceptive effect of the Mirena system is explained by the ability of the acting component to exert a local influence on the endometrium, preventing proliferative changes in it and decreasing its implant function. In addition, the movement of spermatozoa is hampered. Endometrium is not able to achieve the necessary maturity for the formation of pregnancy. Levonorgestrel enhances the viscosity of cervical mucus, which in turn prevents the penetration of spermatozoa into the uterine cavity and fertilization of the egg.

The effectiveness of the Mirena system is compared with the sterilization of women, copper - containing intrauterine systems, oral contraceptives.

The effect of the active ingredient helps to reduce the excessive amount of menstrual bleeding after the expiration of three months after the application. Clinical practice shows that the use of a spiral reduces blood loss by 88%, which prevents the development of iron deficiency anemia.

The "Mirena" spiral is used in endometriosis. It should be noted that levonorgestrel-containing hormonal contraception today has become quite widespread in the treatment of this disease.

It is used "Mirena" with myoma of the uterus. The agent also reduces the incidence of inflammation in the pelvic organs.

"Mirena". Instructions. Application.

Before the introduction of the system, if necessary, a smear or other tests can be taken to detect the presence or absence of infections, including venereal infections.

For women of reproductive age, the use of a spiral is recommended no later than seven days after the onset of menstruation (on the first or seventh day of bleeding).

After the gynecological examination, it is necessary to treat the cervix with an antiseptic solution. With the help of a thin flexible plastic tube, a helix is introduced.

Some patients experience dizziness and pain after the system installation procedure. In case if after half an hour after the injection (when at rest) the symptoms persist, the spiral is probably incorrectly installed. In this case, a gynecological examination should be carried out. The system is removed if necessary.

Adverse reactions are characteristic for the first months of application of the system. As a rule, they are eliminated on their own and do not require treatment.

Before installing the spiral, you should consult with a specialist, identify the presence or absence of contraindications.