Birth Control: Barrier Methods
Barrier methods, such as condoms, diaphragms, cervical caps, sponges, and spermicides. Spermicides and
condoms when used alone are not very reliable and should be used together or along with another method to
increase their effectiveness. Condoms should always be used if you are at risk for a sexual transmitted disease.
A condom is made of latex, plastic, or animal tissue and is a sheath that fits over the penis.
Many words are used to describe a condom, including a rubber or a safe. A condom works by
preventing sperm from ejaculate from entering a woman's vagina. The male condom not only
provides a method of birth control, but also protects against sexually transmitted diseases.
When used properly, male condoms are considered 98% effective in preventing pregnancy.
The female condom is made of polyurethane and is worn by a women during intercourse. It
completely lines the vagina and partly covers the perineum, helping both to prevent
pregnancy and provide protection against sexually  transmitted diseases. One ring lies inside
the vagina, while the other ring, on the open edge, remains outside the vagina and covers the
perineum, allowing protection for the labia and base of the penis during intercourse. The
female condom doesn't contain spermicide and should not be used at the same time as a
male latex condom. There is lubricant on the inside of the female condom, and additional
silicone based lubricant is often used with the female condom. The rates of effectiveness of
the female condom vary according to how long a period a person has used it and whether it's
used every time a woman has intercourse. Generally, it is considered effective just over 80%
of the time, when used properly. The female condom is not difficult to use, but it takes some
practice to become used to it. It is advised that women practice inserting the female condom
and removing it before they use it during sexual activity.
A diaphragm is a soft rubber dome that has a covered flexible spring at the outer edge.
Diaphragms are used in conjunction with spermicidal gels or spermicidal creams. The
diaphragm keeps the contraceptive cream or gel close to the cervix. This prevents sperm from
entering the uterus, thereby reducing the chances of pregnancy. With correct use of the
diaphragm and contraceptive gel, this method of birth control is considered approximately
94% effective in pregnancy prevention. The effectiveness decreases when the diaphragm and
spermicide are not used properly. A diaphragm can last for 2-3 years, but it should be
observed for any rips or holes prior to each use. This can be done by stretching the
diaphragm while holding it up against light. A doctor will examine you and size a diaphragm
for your body. The diaphragm is put into place prior to intercourse, and is removed 6-8 hours
after intercourse. The diaphragm shouldn't interfere with sexual activity and can remain in
place during urination and bowel movements. One can shower or bathe while the diaphragm
is in place.
The cervical cap is a latex, dome-shaped device that fits over the cervix. There is a groove
on the inside of the cap that creates a seal and allows the  cervical cap to stay in place,
which is aided by the vaginal wall.  The cap is often used with a spermicide cream or gel. Six
months prior to fitting, a pap smear will be taken. It is essential to be fitted correctly for a
cervical cap to effectively prevent pregnancy. The cervical cap acts as a barrier and blocks the
sperm from passing the cervix from the vagina. This prevents the sperm from reaching the
uterus, thus preventing pregnancy. The cervical cap can be in place for 48 hours, offering an
advantage of spontaneous sexual activity. It can be a good alternative for those who have
difficulty using a diaphragm. However, the cap can't always be fitted effectively to every shape
and size of cervix and it is possible to dislodge the cap during sexual intercourse. The cap is
removed within 48 hours after intercourse. The cervical cap is considered to be 91% effective
when used properly.
The contraceptive sponge is a small, pillow-shaped polyurethane sponge  that contains a
spermicide. There is a concave spot on one side of the sponge that fits over the cervix and
acts both as a barrier for sperm and helps to keep the sponge in place during intercourse.
The opposite side of the sponge has a small loop to assist in the sponge's removal after
intercourse. The contraceptive sponge comes in one size and is available over the counter at
most drugstores. The contraceptive sponge can be inserted up to 24 hours prior to
intercourse, enabling spontaneous sex, and provides effective birth control if intercourse
occurs more than once during that period. The sponge is removed 6 hours after intercourse.
The sponge is often used in conjunction with other birth control methods, most often
condoms.  This adds a second element of pregnancy prevention, further decreasing the
changes of pregnancy. The contraceptive sponge has several benefits.  These include ease of
use, affordability and comfort.  As well, the sponge is available without a prescription and can
be purchased at most drugstores.
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