LONG ACTING REVERSIBLE CONTRACEPTIVES
(LARC)
I will discuss, what is called long
acting reversible contraceptives.
What is LARC; these are long
acting reversible contraceptives. They
can last anything from 1 to 15 years or forever you do not have to worry about
contraception every day or every time you have sex. Have it done or fitted and
forget about it. Fertility returns when it is removed. It is as safe as sterilization, but much
better than sterilization, as it is not surgical and not permanent. LARCs are
inexpensive in the long term, although upfront cost in some countries seems to
be high. Other contraceptives are dependent on the couple to remember every
time, they have sex therefore their failure rate is high, between 25 % to 50%particularly
among the teenagers.
About 3 million unplanned pregnancies
occur in America alone. Nearly 30% of pregnancies around the world are unplanned,
25% to 30% of these are aborted. It is estimated that 35 of every 1000 women have
had an induced abortion in their life time. The World Health Organisation’s
quoted statistics are 1.6 million unsafe abortions took place in 2008. 1 in 10 pregnancies
will end in an unsafe abortion. In 2008, 47,000 women died of unsafe abortions;
this is 13% of all maternal deaths. Besides these deaths many women (8.5
million) get temporary or permanent disability as a result of these botched
procedures. Almost one third of these women have no access to any medical help.
This is well known to many of us.
Forced sex, domestic violence, no
access to contraception, poor quality of contraceptives,
incorrect use and finally no empowerment or education for women. Globally, in the developing world 215 million
women, have a need for contraception which they are unable to get. These
figures show that effective contraception is an important issue for women’s
health. Contraceptive methods discussed so far depend on the user compliance. As
already mentioned LARC methods are independent of user compliance, they are very
private (your partner or his relatives as in some cultures cannot interfere). Failure
rates are low when used correctly, like in perfect use. Long term these are
very cost effective from the cost of contraception itself, reduction in
abortions in general, reduction of septic abortions and compromised women’s
health, and maternal death.
Around the world there is a movement
to promote LARC methods among women of all age groups and we should
take this as international priority.
There are four methods;
1) Intrauterine devices (IUD)
2) Intrauterine systems (IUS)
3) Subcutaneous implants
4) Hormone injections
LARC can be used for
1) Women of any age
2) Nullpariae (meaning a woman whose
has never given birth) is no
longer an objection to these contraceptive
particularly IUD OR IUS.
3) Women who cannot take hormone
contraceptive particularly oestrogen
4) Have nausea, breast tenderness,
and migraine headaches.
5) Who are breast feeding or recently
had a baby.
6) Have or had a hormone dependent
breast cancer,
7) Who have had an STI including HIV
8) Have epilepsy
9) Have Diabetes or high BP,
inflammatory bowel disease or are smokers
10) Have recently had an abortion. In
fact Copper IUD is used as an emergency contraceptive and can be continued as a
contraceptive.
Let us talk about these LARC Methods
The intrauterine device for
contraception was first invented by a gynaecologist, Jack lippes. He started
working on it in the 1950’s. Initially he was discouraged about it, however he
continued to work on it and he released it in1962. It is an S or different shaped
plastic with a string attached to its tail end, so that it can be easily
removed. It works by making the bizarre changes in lining of the uterus, this,
also realises white blood cells and an hormone called prostaglandins. These are
hostile to the fertilized eggs, preventing implantation. After its release in the sixties, it became
the most popular IUD. From memory I can remember that I used to put in a few
IUD’s for women who went home after child birth. We were sure we will never see
them again until they were pregnant. It was 99% safe as regards failure,
expulsion, perforation of the uterus and infection .In some women the loop remained
there for their life time. It’s now off the market as; no inert IUD’s are approved in USA, UK and CHINA. Now is the era of copper IUD’s which came in
the market in 1969. Slowly different designs were made and sold globally. A new
IUD called a DALKON shield came on the market in the seventies (1971-1976) it
caused a lot of pelvic infections even deaths with lots of legal issues. The company went bankrupt, and Dalkon shield
was withdrawn. Its design was faulty. It had a multi filament at the end
for withdrawal. This caused infections. This episode with the Dalkon shield
gave women a worrying time. Confidence in using IUD’s was very low. The newer IUD and IUS are both safe. One of
the IUD’s is a Copper IUD called Paragard
. It came on the market in 1984, and was made in the USA. It is the only copper
IUCD you can get in USA.
It is a T shaped polyethylene frame wrapped
with 380 mm of copper wire and it is called a T380A.
The following photograph shows Paragard with Mirena
Copper is wrapped around the arms and
stem of the T shape IUD. They have two
monofilamentous strings attached to its tail end which helps to pull it out when
it needs to be removed. There are only two different types of IUCD available
now. These are called IUCS (intra uterine contraceptive system) .They contain hormones
and not copper. The two IUCS are called MIRENA and SKYLA or JAYDEN. Both of
the IUD and IUCS work by damaging or even killing sperm. Copper is toxic to the
sperm, it makes the uterus and the fallopian tubes produce a fluid containing
copper ions, white blood cells, prostaglandins(Hormones) and enzymes, that kills
the sperm; this also causes a kind of inflammatory reaction in the uterine
cavity . Some women have an ethical objection to it, thinking it is an
abortion. This is not so. According to the latest American laws, a pregnancy is
a pregnancy only after implantation.
Your care giver should be trained, as
to when to and how to insert an IUD and IUCS. You will be required to attend
the clinic twice, once to get your medical, social, sexual and family history,
and make sure you are suitable for a particular contraceptive and second to
have it fitted. All the methods are discussed with you in detail. After this
you can go home and think about it.
May be if you wish or need to discuss
this
with your partner. After this you can
go back to
you care giver at
the appropriate time. The best time is with in the first 5 days of your
periods. If this clashes with your commitments it can be done at any time if
pregnancy is excluded. It is easier if you have had a vaginal delivery. Any current
STI’s should be excluded. If you are at risk for an STI and HIV, these tests are
performed at the same time. Many clinicians
like to give a prophylactic (preventative) antibiotic as well. It is ideal if
you have only one sexual partner. It
helps a woman if you explain to her how and what you are going to do. It is
very useful if the woman takes a couple of Paracetamol and one Neurofen(ibuprofen
200mgms) 250 mgm half an hour before the time of insertion. you will feel more relaxed and will not
feel the pain so much. Many clinicians like to give 400 micrograms of a
prostaglandin tablet either Misoprostil or Cytotec. This ideally should be
taken 4 hours or the night before insertion of the IUD either orally or
vaginally, to nulliparae women or in women who are expected to have a scarred cervix,
(previous, caesarean section,) or cervical operation. Sometimes a local
anaesthetic or mild sedation is required. It is best to go for the procedure with
someone, so that you can come home easily if you feel somewhat unwell e.g. Faint or Nauseous, or wait in the doctor’s
office until you feel better.
A follow up visit is required in 4-5
weeks. This is to make sure you are well,
IUCD is in place, and you know how to feel the string.
If your partner can feel the string, it
can be trimmed.
Copper IUD’s tend to cause painful and
heavy periods. They should not be used
if a women already has heavy or painful periods, if she is anaemic, if she has
abnormal bleeding without a diagnosis, if she has an abnormal cervical smear or
cervical cancer, recent or current pelvic infection, abnormal shaped uterus or
has a uterine fibroid distorting the
shape of the uterus and is suspected to be pregnant. Woman with congenital or
valvular heart disease should not use IUD’s because of the risk of infection to
the heart valve.
The above mentioned problems can be diagnosed by a pregnancy test , blood
tests and ultrasound . An experienced clinician can make these diagnoses by
clinical examination alone.
The big benefits of IUD are fit and
forget. It is very private and very effective (99%)
Long term it is not expensive.
It is immediately reversible.
An IUD can be inserted after an
unprotected sex or accident at the time up to 5 days, to protect you from
getting pregnant and then it can continue for future contraception.
The side effects of Copper IUD’S As
already mentioned are heavy and painful periods, but they often settles down in
3-4 months. The newer IUD’s cause problems less often. For these problems women
are prescribed special drugs (NSAID, e.g Nurofen, and antifibrinolytics called
tranexamic acid). Both these are very effective.
As already mentioned some situations
make it more difficult to insert an IUD such as a previous caesarean section.
There is a small chance of getting a pelvic infection
(1in500). It is more likely to happen within 21 days of insertion or if you have
more than one sexual partner always practice safe sex to protect yourself.
LARC’s do not protect you from STI’s.
This is one very big disadvantage of LARC’s
At the time of insertion the IUD can
be pushed out of the uterus. It happens in 1 in 1000 insertions. If this
happens it may need to be removed laprascopically.
Sometimes it falls out spontaneously
outside the uterus (5 in 100) without a woman knowing it. That is why it is
important to feel the thread. Sometimes the thread withdraws in the uterine
cavity. An ultrasound is the best way to look for a missing IUD. If a woman
gets pregnant with an IUD (1 in 100), most often it can be easily removed; and
it should be removed as soon as possible. There is a small risk of miscarriage. In situations like this it ideal to do an
ultrasound to make sure that the pregnancy is alive and it is in the uterus,
because sometimes these pregnancies can be ectopic meaning outside the uterus.
Always remember to feel the thread of
the IUD after a heavy period.
Report to your doctor if you do not
feel well, you have pain, discharge, irregular bleeding, pain on passing urine,
or you have any symptoms of pregnancy or if your period is more than a week
overdue.
If you have casual sex or sex with a
new partner always use condoms.
Remember the date when you need to change
your IUD. It can be removed easily by pulling the string without causing too
much discomfort. A new IUD can be fitted at the same time if you so desire. Most of the IUD’s can stay 5-10 years. Multiload, an Australian IUD needs to be
changed after 3 years.
NEWER COPPER IUD
In China family planning is a big issue.
It is only in the last six months that they have relaxed their one child
policy, so over the years many different types of IUD were invented and used.
It was always a challenge to find and remove a Chinese IUD. Now with ultrasound it has become a game
instead of a challenge. It always intrigues you what you might find. One of the
most commonly used IUD was a stainless steel ring (SSR). This had a high
failure rate, and higher expulsion rate which was worry some. Slowly copper
IUD’s replaced SSR by 1989.
In China 60% of the female population
(about 114 million women in 2007) uses IUD after first child birth, until now
they were allowed only one child. One serious problem with copper IUD is heavy
and painful periods. This causes anaemia and poor health. To overcome this
problem Chinese developed a copper IUD
with INDOMETHACIN ( a nonsteroidal anti inflammatory drug) in 1986.
This decreases the amount of bleeding
and cramps. It is composed of three
layers. An inner layer of y shaped stainless steel the middle layer is wound
with about 200 to 300 mm of copper wire, the outer layer is again stainless
steel. A total of 25 mgm of indomethacin is welded to both ends of the
horizontal arms and in the centre by silastic beads. Few studies compared both
medicated –Y IUD VS TCU380A(a type of copper IUD).That medicated IUD’s better
than other copper IUD’s , blood loss was less , less removal rate for medical reasons, higher
continuation rates, and similar low pregnancy rate. Some of these studies
continued up to 5 years, more trials will be needed before we make this a standard
method. It is very reassuring and comforting for women.
GYNEFIX STANDRED AND MINI
Gynefix standard
has 6 copper rings(5MM diameter) where as gynefix mini has 4 copper
rings hence it is better for nulliparous teenagers.
Due to continuing side effects of
copper IUDS and a large number teen age pregnancies research for better copper
IUCD continued. People measured the sizes and shapes of nulliparous uterine
cavity and decided they were different. A Belgian gynaecologist decided to make a
frameless copper IUCD. He used a polypropylene string with a naught at the top
to anchor it to uterine muscle in the front wall of the uterus. There were 6 or
4 copper rings on this string. The one with 4 rings was smaller and is called
mini. They have 200mm square of copper on the smaller one 330mm square of
copper in the larger one. The first and the last copper ring is crimped to the
thread to stop it from falling out. They work the same way as any copper IUCD.
Any copper IUCD which has more than300mm of copper is spermicidal. This proved to be excellent as the egg could
not be fertilized and therefore no ectopic
pregnancy has ever been reported in women using gynefix . It needs special equipment and trained
personnel to put it in. It is less painful for nulliparous teenagers. It has to
be watched carefully so that the copper rings do not get uncrimped and fall out.
Some authorities recommend a six monthly ultrasound. Gynefix is available in
Europe only. Research continues on copper IUCD there are about about 9 already,
in diffrent parts of the world.
The above image is of GYNEFIX within the uterine cavity.
MIRENA ,SKYLA (OR JAYDEN)
Since contraception is so important
in some parts of the world researchers are working on better and better methods.
Although newer, inventions in the
shape and sizes of many IUCD have improved the spatial and pain problems with
copper IUCDS, the main problem with menorrhagia( heavy Periods and also painful
periods )remained.
This led to a new generation of
hormone releasing IUCD. This is called Mirena, all over the world. Since we emphasised using IUD for younger
women a smaller version of Mirena is produced called Skyla in Australia it is
called Jayden. This is also a hormone releasing IUD in a smaller size releasing
smaller dose of the hormone (LNG-IUS;mirena). Mirena has a plastic T shaped
frame of 32 by 32 mm, it contains a small size reservoir which stores, 52 mgm of Levonorgestrel (a Progesterone hormone) Mirena is fitted
inside the uterine cavity. It remain there for 5 year doing its job of
contraception and preventing excessive bleeding
unless it needs to be removed for some medical reasons or woman’s wishes
.It has a mechanism which helps it to release 20 micrograms of levonorgestral per day . Skyla on the other
hand is Smaller, 28 by 28 mm in size; 13.5mg of levenorgestrel is stored. It
releases 12 micrograms of levonorgestral per day. Diameter of the inserter in
skyla is also smaller preventing pain at the time of insertion. (Mirena
4.75 skyla3.8) Mirena works for 5 years
skyla works for 3yrs .there efficiency is comparable. If the women’s uterus is small
skyla is preferred as it will not cause pain.
Mirena was invented and released in
1976 in Finland. Like it is said while discussing copper IUD it is always best
to give IUCS women two sessions, unless it is impossible for them to attend
twice. The insertion is always done by a trained person. A follow up
appointment is also very important.
Some Women cannot have an, IUCS these
include
1)
Undiagnosed
abnormal vaginal bleeding
2)
Current
or recent pelvic infection
3)
Abnormal
cervical cytology
4)
Present
or past breast cancer
5)
Compromised immune system
6)
Abnormal
uterine cavity shape either due to
congenital abnormality or fibroid uterus
7)
Serious
liver disease
8)
Allergy
to levonorgestral and chemicals used to
make the device, silica, silver ,barium iron oxide ,and polyethylene
9)
Make sure definitely not pregnant
10) Not keen to get pregnant in a hurry.
11) If the
woman suffer from congenital heart
disease , do not use IUCD or IUCS ,as these can cause infection in the heart
valve
HOW DOES IUCS WORK
There is no single explanation how Mirena
works.
It thickens the cervical mucus plug so
that the sperm cannot penetrate the cervical canal and enter the uterine cavity. The sperm becomes sluggish and cannot reach
the egg to fertilize it .The lining of the uterus thins out, even if there is a
fertilized egg it cannot implant itself. Mirena works well, only 2 out of 1000 women
become pregnant in the first year of use. This can often happens if, IUCS was
not properly positioned to start with
or it was pushed out unnoticed often
during a very heavy period .
OTHER BENEFITS OF IUCS
Very heavy periods in women are decreased almost by 90 % after few months of
use. Cramps also stop, menstrual periods stop all together in almost 20% women it
works like a hysterectomy. Unlike hysterectomy, the periods and fertility
returns to normal after Mirena is removed in premenopausal women. It is not harmful,
not to have periods when you are using the Mirena, If you are in the older age
group say, 38 onwards, if you have perimenopausal symptoms you can use oestrogens.
You do not need progesterone as you already have a progesterone IUD. TheyL
together work like HRT. Mirena greatly helps the woman with endometriosis
particularly in teenagers. High doses of progesterone for the treatment of endometriosis
cause too many side effects, where as Mirena does not. Lessening of back
flow of the blood because of the very heavy periods from the
uterus via the fallopian tubes into the belly also helps to improve
endometriosis, as with Mirena there is very little bleeding or no bleeding. It
also prevents Endometrial thickening (HYPERPLASIA) and cancer. Reduces the risk of Ectopic pregnancy; as the eggs do
not get fertilized. It is useful to decrease bleeding in bleeders suffering
from inherited bleeding disorders. Mirena can be used to decrease bleeding with
fibroids.
No harmful effects have been noted in
obese women on serum lipids (cholesterol and triglycerides), carbohydrates,
Coagulation profile and liver enzymes. Although there are no publication on the
use of IUCS with history of DVT many studies found it to be safe hence a
history of DVT or Thrombophilia , it is considered
appropriate to use progesterone alone contraceptive. It should be used with caution.
IUCS, did not show any effect on High
blood pressure or weight gain even in women with type 1 diabetes. It can be
used in women with type 2 diabetes as long as their vascular (blood) system is normal
It can be used 4 weeks after child
birth. I preferred it to be 6-8 weeks so
that the risk of expulsion, bleeding and infection is minimised. WHO and The American college of O and G also recommend 6
weeks. Anyway there is no need for contraception in the first 3 post natal
weeks.
Levonorgestral does not have any
adverse effects on breast feeding or on the growth and development of the
breast fed infants.
Mirena is useful in women with heavy bleeding with fibroids. Before it is inserted in uterine cavity, the care
giver has to make sure the fibroid is away from the Path of the IUCS. This can
be done by ultrasound, and also make sure there is no other serious cause for
excessive bleeding eg cancer of the uterus.
RISKS AND SIDE EFFECTS OF MIRENA
Menstrual problems;
Hormones IUCS on one hand is supposed
to help with menstrual problems on the other hand this causes initial irregular
bleeding. This may be due to the fact that it interferes with the normal
hormone cycles, incomplete suppression of ovarian
activity and oestrogen deficiency The
bleeding is treated by estrogens , oral contraceptive for few weeks,
non-steroidal anti -inflammatory drugs such as Neurofen with which most of us are familiar . Another
group of drugs with which many of you may not be familiar
are very useful. They are called antifibrinolytic
agents (TRANEXAMIC ACID). They are very useful in all kinds of uterine bleeding
.Finally progesterone receptor modulators called Mifepristone is also very useful as they
decrease the progesterone activity and increase the oestrogen activity. This is
also used if there is irregular bleeding with other progesterone only
contraceptive. So please do not worry there are many ways to stop this intermittent
unscheduled bleeding. Very Often some care
givers give Mifepristone (100mgm) at the time and then once a month for
3 months. It has proved to be useful and can be repeated. Once the uterine
lining thins out this settles down, as mentioned earlier the periods usually
stop for the remaining time.
Perforation of the Uterus
This is rare. It usually happens at
the time of insertion, the frequency being 1 in 1000. If the uterus is
perforated IUCS should be removed.
Expulsion of the IUCS
This means that the IUCS is expelled
out of the uterus. It usually happens in about 5% of women in the first few months.
It happens often, if it was inserted too soon after child birth or in
nulliparous women.
Once it is expelled the woman is no longer protected.
Mirena never protects you from STI’s. If you are at risk make sure
you use a condom as well. It can be used if you are HIV positive, as it has not
shown to cause viral multiplication.
It seems to be protective against infection
due to the thickened cervical mucus. The other problems Mirena can cause are headache,
vaginitis
Pelvic pain, pain during bleeding,
breast tenderness, hair loss, and ovarian cysts. These ovarian cysts are
harmless and go away on their own.
Mirena has been reported to cause stroke like symptoms, I have seen one case
amongst my own patients. I had her checked over by a neurologist, he said he
cannot find anything wrong however she settled after Mirena was removed. I have also come across
intermittent anaphylactic reaction, swelling of tongue or lips, difficulty in
breathing, on and off until I removed the Mirena as matter of urgency. These
can be due to Nickel allergy.
THE NEXT LARC WHICH I WILL TALK ABOUT
IS A PROGESTERONE IMPLANT
Implanon, I am sure, thousands of you
have heard about it. It is now used by 11 million women around the world in 60
countries. This technique uses a single rod of 4cms by 2 mm sealed on both
sides.
The
possibility of subdermal(under the skin )contraceptive was discovered
after Silicone was discovered in 1940 ,not only that it was found to be
compatible with the human body. It was felt that these silicone rods can be
filled with drugs which can then be slowly released and act as contraceptives.
Slowly different types of implants were
made. They are filled with progesterone only. The implant which was first
marketed was called Implanon. It was first marketed in Indonesia in 1998. It
contains 68mgm of progesterone called
Etonogestrel. It is inserted into the non dominent upper arm of a woman just
under the skin .This releases about 30 to 40 ug to progesterone per day. It
gradually decreases in amount, in the 3rd year it releases 25 -30 ug per day,
however this enough to act as a contraceptive.
The commonest implant used in the
world was Implanon. However in recent times it has been modified so that it has
become easier to locate it by x-ray when it is lost. Now it contains 15 mgm of barium
dispersed in it, it is called
IMPLANON NXT. There are many
different types of progesterone implants available in different countries sold
under different names(NORPLANT, NEXPLANON SINOPLANT11).The techniques of their
making differs . They work similarly and
have same problems. They can last from 3 to 5 years.
Like any contraceptive advice, your
care giver will take your history, do an examination, and relevant tests ie:
Pregnancy test and an Ultrasound. This has been discussed in detail earlier.
Progesterone Implants can be used in
women of all ages. However there are some situations when it should not be used
and in some it should be used with caution.
Contraindication to use Implanon
1) Make sure you are not pregnant. A
negative pregnancy test excludes pregnancy only if it is more than 3weeks
2) You are not allergic to progesterone
(Etonogestrol) or any substances contained in the applicator or used at time of
application.
3) You have or had no jaundice, liver
disease, liver tumours, and gall stones.
4) You have no history or presence of
breast cancer, ovarian cancer, uterine cancer or cervical cancer.
5) If you want to breast feed, make
sure baby is at least 6 weeks old.
6) You do not have unexplained,
undiagnosed vaginal bleeding
7) Current or past history of
thrombosis, heart disease and any other vascular disorders.
8) If you have diseases such as
porphyria, epilepsy, tuberculosis, lupus and if you are on any drugs please
inform your care giver so that he/she can make sure it does not interfere with
Etonorgestero or vice versa. He/She will explain all this to you.
9) Diseases such as high blood
pressure, severe diabetes, obesity, restricted mobility, high cholesterol and
triglycerides other metabolic conditions require special care when you use
ImplanonNXT
10) Previous history of ovarian cyst
or ectopic pregnancy also requires special attention.
11) Any vascular diseases of the eye
12) There is some difference of
opinion, if it is safe to use, Implanon, in women who are HIV positive or have
AIDS.
HOW DOES IT WORK
Like all other hormone contraceptives
it works in 3 ways
1) It inhibits ovulation, no eggs no
pregnancy.
2) It increases the thickness of
cervical mucus hence the Sperm cannot penetrate it.
3) It thins out the lining of the
uterus (Endometrium) as a result the fertilized egg cannot stick to it
(Implant).
This is why some people have a moral
objection to it considering it to be an abortion. However as we have already mentioned American
law only considers it to be a pregnancy after the egg has implanted.
EFFECTIVENESS
Nexplanon , ImplanonNXT (
Implanon)and Sinoplast 11, are all long acting subcutaneous reversible contaceptives.
They have been shown to be the most effective contraceptives in the current
world. We wish we could spread them like sunshine on the grass; as this then could
save millions of women and millions in terms of money. Their failure rate is
.o5% . They are almost 10 times more effective than, tubal Sterilization. Not
only that, they are reversible. The failure is often due to wrong placement,
wrong timing of placement, and prexisting pregnancy.
It should be inserted within the first 5 days of menstrual cycle, on
the day when the previous one is removed, on the first day after Depo-Provera is due, within 5 days of first
trimester abortion or miscarriage, within 21 -28 days of 2 trimester. If all
these instructions are followed it is 99% safe.
INSERTION AND REMOVAL
An insertion is done only after the
woman has been informed all about the implant and other contraceptives, and she
wishes to use the sub dermal implant .Make sure she is not pregnant, has no
STI, no absolute contraindications; it is inserted by a trained clinician on
the inner side of the non dominant arm.(ie: If right handed then implant goes
in the left arm) The rod comes in a pre packed container with an applicator.
It is inserted in an aseptic
manner. The clinician and the woman have
to make sure that the Implanon has gone in the arm by feeling it under the
skin.
Removal of the device is also done by
a trained clinician. A small cut is made; the device is picked with a small forceps
and gently pulled out. Sometimes the Implanon migrates and is lost; this often
requires a high resolution ultrasound or an x-ray, CT or MRI.
Most women begin to ovulate within 6
weeks of removal. Fertility levels return to pre Implanon levels within
3months.
Implants require changing every 3
years.
Sometimes they require removing for
medical reasons for example, thrombosis, persistent high blood pressure, ovarian
cysts, and reaction with other drugs. Like all drugs; Implanon can have side
effects, some of these are serious, tell your care giver if you don’t feel well
after the implant of Implanon.
SIDE EFFECTS OFSUBDERMAL IMPLANTS
1) Insertion
and removal complications
They can cause pain
, infection , bruising and scarring . Many pregnancies have been reported when
the rod was not checked and it was left in the inserter. Newer applicators are
much better and easier.
2) Irregular bleeding pattern is the
most annoying problem .Sometimes, on and off or else prolonged. They do not
hurt in any way but they are bothersome, and often one of the reasons to have
it removed. The same treatment is offered as with Mirena . Generally it settles
down in 3 to 6months
3) Many other side effects are
similar to Mirena ; Acne , Decreased
libido , Hair loss, pigmentation of the skin and face ; Cloasma ( yellowish
butterfly pigmentation of the face),Hives, Breast tenderness, Depression,
nervousness, Mood swings, Dizziness
Nausea, Vomiting, and Abdominal pain.
Besides these progesterone like symptoms more serious ones are increase of
Blood Pressure, poor control of diabetes, chest pain, pain in the legs
suggesting thrombosis, swollen face or tongue , trouble swallowing, breathing
problems, sudden collapse, loss of
vision and sudden feeling of weakness in your body you need urgent medical
attention. These symptoms are indicative of thrombosis phenomenon in the body.
ADVANTAGES OF IMPLANTS AS CONTRACEPTIVES
1) Most women of any age group can
use it
2) Most effective form of birth
control and does not require women’s compliance or daily attention.
3) It can be confidential, you do not
have
to involve your partner, does not
require
interruption of foreplay or intercourse.
4) Fit it and forget about it for 3 years.
In some special cases you may require
regular checkups e.g. if you smoke, you have high
blood pressure you have any conditions already discussed before.
5) You can use this if you cannot use
oestrogens
5) Women who want to breast feed can
use it after baby is 6 weeks old. Very small quantities of progesterone are
seen in the breast milk but this does not alter the quality of milk or in any
way interfere with
the babies’ growth and development.
6) You can use it if you are a smoker
and over 35.
7) It takes only 1- 2 minutes to
insert it and remove it, if inserted at the correct time, it starts working
soon after.
8) Fertility returns within months of
Removal.
9) You cannot use it if you have an
abnormal shaped uterus or if you have a fibroid distorting the uterine shape.
10) Medical benefits, it reduces
menstrual bleeding and pain in women with fibroids or endometriosis
11) Helps with Premenstrual symptoms
12) Although in some women it causes
acne in others it prevents it.
13) There is initial expense in some parts of the world, but
long term it works out very economically.
DISADVANTAGES
1) The biggest risk is of STI, Including HIV. Anyone who
feels that they are at risk for STI, they must use condoms along with Implants.
2) Other risks have already been discussed with side effect.
INJECTABLE LARC
In this paragraph I will talk about the injectable larcs. They
are progesterone injections;
1) Depot medroxyprogesterone,(DMPA) it is also called
Ralovera or in simple English depo-provera.It was first introduced in 1967. It
has a maximum action of 12 weeks. It is best to repeat after 11 weeks, it takes
one week to be active. Woman must wait for one week after the first injection.
With perfect use the failure rate is .02%.
It can be used if you are breast feeding. I found it to be
very popular in Indian villages, as village health care provider gave the
injection every 12 weeks.
Other injectable long acting progesterone is called NET-EN. This
contains only 200 mgm 0f a progesterone called Norethistirone.
It needs to be given
every 2 months and is not popular.
Advantages and Disadvantages
1) Safe in women who cannot take estrogens or the pill
2) Can be used in women who suffer from migraine.
3) Can be given any time postpartum, or soon after first or
second trimester abortion.
4) Women with liver enzyme inducing medication can use it
without the dose interval being reduced. Some of these drugs are, drugs for epilepsy,
Tuberculosis, antibiotics and antifungal
They should be used with great care.
5) Safe in women who have HIV, AIDS,
And STI’s.
6) Useful for women with endometriosis and unexplained
bleeding problems and painful period. Endomeriosis symptoms are well controlled.
7) Usually does not cause headaches depression and acne.
8) No increased risk
of DVT, pulmonary embolism stroke and
myocardial infraction
9) Decreased risk of endometrial cancer, pelvic inflammatory
disease (PID), fibroids, endometriosis and functional ovarian cyst, Iron
deficiency anaemia, ectopic pregnancy.
10) Minimal drug interactions compared with other hormonal
contraceptives.
11) It is useful for women who are obese i.e Body mass index
of 30 or more.
12) It is good for
women who suffer from bowel diseases.
Disadvantages of injectable contraceptives
1)
World
health organization has reported no increased risk of breast cancer or any
other cancer. In fact it decreases the risk of the cancer of the lining of the
uterus (Endometrium )
2)
Irregular bleeding is the most annoying side effect.
However it settles down after 2-3months. 50% women have no period after 1 year
of use they are generally happy about this. The treatment for irregular bleeding
can be by Oestrogens or Neurofen . There is no real dander in this bleeding, it
happens because of the thinning of the uterine lining.
3)
Weight
gain is another annoying side effect especially in women who were already
obese. The weight gain can be as much as 5 lbs in 1 year or 8 pounds at 2
years. One of the problems is that once the injection is in it is in.
4)
The
side effects are headaches, depression, poor sex drive, breast tenderness, nervousness,
dry vagina, and tiredness.
5)
The
other important side effect is loss of bone density. It has been shown that
some teenagers can lose as much as 2-3 % in bone density. Because of this many
clinicians recommend a evaluation if
Depo- Provera is to be continued
for more than 2 years. To keeps your bones healthy, you need to take
about a 1000 mg of calcium daily . Regular
exercises, sports, vitamin D, and magnesium. Your GP will be able to give you detailed
information on life style, particularly in teenagers.
6)
It
takes longer for a woman to get pregnant after she stopped DEPO –PROVERA. It
depends on the age weight and any other
problems, a woman had before she went on DEPO- PROVERA
7)
One
of the most important risk factor is exposure to STI’s, HIV. This does not protect
you from any form of infections from the genital tract. If think you are at
risk tell your care giver to test for
these .You should all ways use condoms when making love either ,vaginal oral or
anal to protect you from STI’s.
8)
Your
clinicians will always take a detailed history and examination, before you are
told you are fit to have the injection.
9)
It
can interfere with few Diseases. Thyroid is one such problem. It can become
under active when you are on depo- provera , so if you are putting too
much weight or too tired have it
checked. It is generally contraindicated in women with liver disease, severe
depression. It may have some degree of effect on blood coagulation
system
10) You can stop It any time you like,
but side effect will last for the duration of 12 weeks. Always have regular checkups.
Report to your doctor if you have yellow colour urine, severe abdominal pain,
prolonged painful, vaginal bleeding, headache, risk of exposure to STI, severe
depression and painful legs.
KEY POINTS ABOUT LARC
1) Larc means long acting reversible contraceptives for
extended period without requiring user action. Currently a lot of attention is
being paid on these methods, due to high rates of teenage pregnancies, high
typical failure rate compared to perfect failure rate . This is because user is
not involved, therefore compliance is not required. High failure rates of other
methods leads to increased abortion rates and consequently high maternal deaths
2) These can last anything from 2month, (There is only one
such injection that has to be repeated every 2 month), 5years, 10 years and
even life long.
There are 4 such methods;
A) IUD
B) IUS OR IUCS
C) Implants, It used to be called, Implanon
now it is ImplanonNXT , it has been modified by adding
Barium to it so that it can be detected by x-ray. It is a progesterone hormone
implant
D) Progesterone
injections
There are two such injections1) depo –provera, NET-NE. Depo-provera
is commonly used. It starts acting after 1 week after the injection and lasts
for 12 weeks. Main drawback is while using depo-provera you tend to loose, bone
density. It is especially important for teenagers as this is the time for them
to build their bone density. It is suggested that it should not be used for
more than 2 years as a contraceptive unless there are very pressing reason to
use it.
2) Larc methods are 20 times more effective than birth
control pill.
There typical failure rate means the rules are not rigorously
followed and every now and then the user becomes casual. Where as in perfect
use all rules are strictly followed and there are no casual lapses. In larcs methods
typical and perfect failure rate is the same, as you do not need to worry every
time you have sex. It works on the principal, fit and forget. Failure rate of
LARC methods varies between .02 % to 1 in 100 women in one year This is even better than
sterilization and it is reversible.
3) IUD and IUS are devices that live inside the uterus after
being inserted. They are inserted by special tools by specially trained
clinicians. This can cause some discomfort,
but it is taken care of by pre insertion pain relief, local anaesthesia or in
difficult cases sedation. This settles down in a day or so. Most women do not
feel anything. IUD’s are, copper IUD’s. They can last for many years, 5-10 or
even forever. They used to cause heavy bleeding and pain, however newer IUD’s
have been improved. Women are given anti
bleeding and anti pain medication. The chinese
have invented a new copper IUD which contains a drug called Indomethacin, it
takes the pain away and decreases excessive bleeding. It is not available to
the rest of world, but is becoming popular in china. This does not contain any
hormones.
ICS is a hormone containing IUD. Recently it has been
produced in two sizes. These have been discussed in the main text Mirena and skyla
(Jayden). There contraindications and side effect are also discussed. There
medical benefits are many. Decreased period pain, bleeding, less symptoms of
endometriosis, less anaemia and better general health. I frequently
used Mirena in later years of my practice. I found it to be Magical. It hardly takes
5 minutes to put it in and 30 seconds to remove it . However it takes at least
a one hour session to explain benefits and risk of LARCS to the clients. Mirena
is permitted to be used for 5 years and skyla for three. The biggest drawback of these IUCD and IUCS is
that they cannot protect you from STI’S. Copper IUD can also be used as
emergency contraceptive.
4) IUD, IUCS, both work by thickening the, cervical mucus so
that the sperm cannot enter the uterine cavity, copper IUD are also spermicidal
so that the sperm cannot move around and die. They both cause the failure of fertilization.
Beside this copper IUD causes inflammatory reaction in the uterine cavity, IUCS
thins out the uterine cavity, hence in either case even if the egg is
fertilised it cannot implant. These should be considered as contraceptives not
as abortificants.
The injectable contraceptives also thicken the cervical mucus,
so that the sperms cannot enter the uterine cavity, stops the ovary to produce
an egg, this results in a thin uterine lining so the fertilized egg cannot
implant, if there is any by chance.
5) The side effects of
IUD AND IUCS, ImplanonNXT and Depo-provera are irregular bleeding, they happen
more often initially and settle down in3-4 months. The treatment has already
been discussed. It is generally by, nurofen, anti bleeding drugs and sometimes
by oestrogens. Other side effects are headaches, depression, and a risk of
weight gain with Depo-vera. Rarely (1in 1000)
IUD can perforate the uterus, it generally happens at the time of insertion. It
can get expelled by itself especially with a very heavy period, and then you
are not protected. This happens in, about 5% in the first year. That’s why it
is important to feel for the thread after each period. There is some
misconception that you get PID and STI after using IUD. If your clinician has taken due care at the time of insertion
it can happen only in the first 3 weeks . If you are at risk of STI please
always use condoms, for Vaginal rectal and oral sex.
6) Rarely pregnancy can occur. There is a higher chance that
his could be an ectopic pregnancy ( pregnancy outside the uterus) or you may
miscarry. In this case the IUD or IUCS should be removed. If the pregnancy
continues this does not cause any foetal abnormalities.
7) Over all benefits of LARC
A) Fit and forget , once it is in place you do not have to do
anything to prevent pregnancy.
B) No one can guess that you are using any birth control. Does
not interfere with
Sex, or any daily activities.
C) It can be inserted soon after an early abortion, 3 weeks
after late abortion, 6 weeks after a baby is born and you can breast feed if
you wish.
D) Any time if you wish to get pregnant or you are not happy
with it. It can be easily removed.
E) Copper IUCD is an effective ,emergency contraceptive.
F) Hormone IUCS is effective with many medical problems,
heavy bleeding, pain, Endometriosis, Fibroids
G) Long term works out to be cheap
H) Problems with cooper IUD’S are being resolved with newer
inventions , Indomethacid, copper
IUD,and Gynefix
I) Hormone IUCS is also improved With invention of skyla.
J) It can be used in women with HIV, History of PID, High
blood pressure, Diabetes, can be used in women on liver enzyme inducing
medications without changing the dose interval. These are medication used for
epilepsy, tuberculosis
and other complex medical diseases. Copper IUCD can be used
in women with thrombophilic disorders. In all these situations they require special
care.
K) Myths about LARC
should be removed from, care givers and public by better education information
and training. This is happening. This does not have an increased risk of PID,
or infertility, unless your sexual habits are compromising.
It can be used in nulliparous women or after caesarean
section. These can be easily inserted and removed by trained personals’ with
proper equipment. I hope once this happens we can save lots of money and lots
of women. At present Russians use the highest number of LARCS 33%, as compared to Australia about 10%.
Possible rare risks are with insertion and removal they occur
in only 2 % of cases. You often need a clinician if there are any problems .The
most important problem is you are not protected from STI’s.
I hope this gives you a very good prospective on LARC’s
methods of contraception which in most people’s opinion are one of the best
methods, but unfortunately least used so far. We need a lot of education, training,
publicity, and initially some government finances to start the method.
Fortunately all this is being done.