Microsoft word - mirena
WHAT IS IT?
The Mirena, hormonal intrauterine system is effective long termand reversible method of contraception. It is also used to treat heavy
periods. It consists of a small, plastic T shaped frame which is insertedby a trained doctor into the womb. Mirena slowly released the
hormone substance levonorgestrel. The system remains effective for 5years but may be removed at any time.
HOW DOES MIRENA WORK?
1. It thickens the mucus in your cervix, so it helps to stop sperm
2. It inhibits normal sperm function inside the womb and the ovarian
3. It make the lining of your womb thin, making periods lighter and
HOW EFFECTIVE (RELIABLE) IS IT?
Mirena is a highly reliable method of contraception. Studies show that
if 1000 women use the system for 1 year no more than 2 will becomepregnant. This is as effective as female sterilisation.
WHAT ARE THE ADVANTAGES OF MIRENA?
1. It is highly effective.
2. It works as soon as it is fitted.
3. It works as a long term contraceptive yet it is reversible.
4. It offers the convenience of “fit and forget” it.
5. After you have used Mirena for about three months you periods
HOW IS MIRENA FITTED?
Usually only a specially trained doctor fits the system. It is donepreferably between day 3 to 7 of your menstural cycle. Your doctor will
give you a pelvic examination to find out the position and size of yourwomb before the pelvis is fitted. Most women find the that fitting
caused only a little discomfort. Some women may wish to discuss theneed for a pain killer with their doctor prior to insertion. Ponstan
(Mefenamic acid) 500mg 1 hour before the consultation is usually wellworth taking. Afterwards you might feel some cramping, like a period
pain, which usually responds to more Ponstan. Preparation for fittingusually takes about 5 minutes and the actual fitting of the system onlytakes a few seconds.
CAN ANYONE USE AN IUS?
Most women who want to use an IUS can do so, including women who
have never been pregnant and women who are HIV positive. Some ofthe conditions which mean that you may not use an IUS are:· if you think that you may already be pregnant
· if you have now or had in the past, cancer of the womb or breast.
· active liver disease
· unexplained bleeding from your vagina eg. between periods or aftersex
· heart attack or stroke (severe arterial disease or thrombosis)· blood clots
· an untreated sexually transmitted infection or pelvic infection· problems with the cervix or womb.
WHAT HAPPENS TO PERIODS?
Mirena does effect your menstrual cycle. Many women have spotting (
a small amount of blood loss or light bleeding in addition to theirperiods) for the first 3 to 6 months after the system is fitted.
Overall you are likely to find that after the first few months your
periods will become much lighter than usual. Some women find that
their periods stop altogether. All women notice a significant decreasein the amount of bleeding plus a reduction in the amount of days that
ISN’T IT ABNORMAL NOT TO HAVE PERIODS?
Not if you are using Mirena. If you find that you do not have periodswith Mirena it is due to the effect of the hormone on the lining of the
womb. Essentially the hormone in the Mirena puts the lining of thewomb into neutral. The monthly thickening of the lining of the wombwith blood does not happen, therefore there is no blood to come away
blocked. Essentially it is not built up so the blood cannot comeaway. Your own hormone levels remain the same and you will find thatyour periods return to normal when the Mirena is removed. Not having
periods and a reduced blood loss can be a great advantage to women’shealth.
WHAT ABOUT HEAVY PERIODS?
Studies have shown that the Mirena is highly effective in treating
heavy periods. Many women who now have been treated with Mirena,would in previous times have had their wombs removed.
WILL I PUT ON WEIGHT?
Studies have shown that women using Mirena have not changed theirweight any more than women not using it.
WHAT ABOUT SIDE EFFECTS?
Well the level of hormone in the woman’s blood stream is very low sothat the side effects such as breast tenderness, headaches or acne arerare. If they do occur they usually disappear after the first fewmonths.
BNSF Medical Program Preventive Therapy Drug List (10/01/13) ANTICONVULSANTS ORAL ANTIANGINAL AGENTS COMBINATION ANTIHYPERLIPIDEMICS SL and chewable formulations are not included TRANSDERMAL/TOPICAL ANTIANGINAL DIABETES DIAGNOSTIC AGENTS AND SUPPLIES CORONARY ARTERY DISEASE ANTIHYPERLIPIDEMICS INJECTABLE DIABETES AGENTS Over-the-Counter (OTC)
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