Other Treatment
Some couples have known problems that are preventing the sperm and
egg from traveling to the fallopian tubes, fertilizing, and implanting in the
uterus where they develop into a fetus. Other couples have unexplained
infertility and want to increase their chances of
pregnancy. Insemination and assisted reproductive technology (ART) procedures
can improve their odds of pregnancy by introducing the sperm to the egg in the
woman's reproductive tract (insemination) or the laboratory (ART).
Insemination procedures flush the sperm
through a thin, flexible tube directly into a woman's
vagina,
cervix, uterus, or fallopian tube
. Insemination procedures put sperm
closer to the egg, thereby, overcoming fertility barriers, such as low sperm
count and cervical mucus. They are also used with donor sperm and can be
combined with other fertility treatments, such as clomiphene or hormone
shots.
Assisted reproductive technologies (ART),
are procedures to remove eggs from a woman's ovaries (or use donor eggs) and
fertilize them with sperm outside the body. One or more fertilized eggs are
then transferred to the woman's uterus or fallopian tubes. ART is used to treat
infertility caused by problems with fallopian tubes, ovulation, and sperm, as
well as endometriosis and unexplained infertility.2
These expensive and complex procedures are typically used only after more
conservative treatment methods have failed.
In order to closely time and control the success of an ART
procedure, doctors commonly control the ovaries with hormone treatment. First,
one kind of hormone is used to "shut down" the
pituitary gland, which in turn stops the
ovaries from making eggs (menopausal
symptoms are common). This is called pituitary down-regulation with a GnRH
analogue. Then, ovulation-stimulating medications are used to trigger ovulation
on a schedule. This process is also used before some insemination procedures.
For more information, see the Medications section of this topic.
Other Treatment Choices
Insemination procedures include
artificial insemination (AI) and intrauterine insemination
(IUI).
Assisted reproductive technologies include:
- In vitro fertilization (IVF), mixing
eggs with sperm outside the body; one or more fertilized eggs are then
transferred to the uterus using a thin flexible tube (catheter) inserted
through the cervix.
- Intracytoplasmic sperm injection (ICSI), injecting a
sperm into an egg, which is then transferred to the uterus using a catheter
inserted through the cervix.
Gamete or zygote intrafallopian transfer (GIFT or ZIFT) is rarely
used because success rates with IVF are as good or better.
For couples with sperm-related infertility, ICSI can be used to
achieve the fertilization stage of the in vitro fertilization process.
What To Think About
ART makes it possible to use donor eggs or sperm when it isn't
possible to obtain healthy eggs and sperm from one or both partners.
Insemination procedures make it possible to use donor sperm.
Overall, IVF-related injections, monitoring, and egg harvesting
procedures are emotionally and physically demanding of the female partner.
Superovulation with hormones requires regular blood tests, daily injections
(some of which are quite painful), and frequent monitoring by your doctor.
Other complications, such as
ovarian hyperstimulation syndrome, can result
(although they are very rare) from hormone shots and assisted reproductive
technology such as IVF.
Before deciding on ART treatment, carefully think through all
emotional, financial, religious,
ethical, and legal questions that come up for you and
your partner.
Should I have infertility
treatment?
Should I have a tubal procedure or in vitro
fertilization for tubal infertility?
Should I consider adoption as
an alternative to infertility treatment?
Frozen IVF embryos from a previous IVF cycle that are thawed and
transferred to the uterus are less likely to result in a live birth (29%
success) than are newly fertilized IVF embryos (50% success).2 However, frozen embryos are less expensive and less invasive
for a woman, because it isn't necessary to repeat the superovulation and egg
retrieval process to produce an embryo. Success rates with frozen embryos vary
from clinic to clinic. Ask about success rates at your clinic, or check the
Other Places section of this topic for online resources.
For a comparison between ultrasound and laparoscopy for egg
collection procedures, see
ultrasound in assisted reproductive techniques.
If you have several
miscarriages or unsuccessful IVF attempts, talk to
your doctor about genetic testing.