In recent years , there
have been many advances in the treatment
of infertility. These generally fall into
five basic areas:
Hormonal
therapy
Surgical
procedures and microsurgery
Artificial
insemination
Assisted
reproductive technologies (ART)
Micromanipulation
techniques.
Hormonal
Therapy
In , many cases infertility
is caused by hormonal imbalances that affect
ovulation in women and or sperm development
in men. Hormonal therapy is used to replace
or enhance the hormonal stimulation necessary
for a couple to successfully conceive.
Follicular development and ovulation in
women and sperm development in men are all
functions controlled primarily by two hormones
discussed earlier; FSH and LH. Together,
they stimulate egg develovpment ovulation
in women and sperm production in men. The
body must produce these hormones in the
proper sequence, in the right amounts, at
precisely the right times for ovulation
and proper sperm production to occur.
When there is not enough of either hormone
or if they are not released at the right
time, the process is impaired and the chances
for conception are drastically reduced.
However, medications are used with great
success to supplement or replace these hormones
and to induce ovulation or sperm development
or replace these hormones and to induce
ovulation or sperm development.
Do we need to write in details of the medication
to be used.
Surgical
procedures and Microsurgery
Sometimes, the cause
of infertility can be traced to past infections
or inflammations that left scarring or adhesions.
This condition can often be surgically corrected
to improve fertilty. Endometriosis, fibroids
and other uterine or tubal problems can
also be treated with surgical techniques.
In many cases, surgery may be all that is
neeeded to restore a couple's fertility.
However, these procedures are frequently
part of a more comprehensive approach and
may be utilised in conjunction with other
therapies.
Artificial
Insemination
Using
Husband' sperm
Artificial
insemination is usually used to treat subfertile
men with fertile female partners. Couples
with infertility due to a male problem such
as low seminal volume, low sperm concentration
or decreased motility, may respond well
to artificial insemination. Artificial insemination
is also commonly used to treat infertility
caused by cervical mucus problems or immunologic
factors in the woman. It is a relatively
simple and painless procedure. The male
is asked to produce a semen sample by masturbation.
The laboratory staff prepares the sample
and then use the sample to inseminate the
female partner.
Donor
insemination
Inseminations
may also be performed with donor sperm. Before
insemination with donor sperm, the sperms
are carefully tested, frozen for atleast 6
months and then stored to enable screening
and prevention of communicable diseases .
The rapeutic insemnation with donor sperm
is used in the cases of:
Low
or no sperm count.
Ejaculation
problems
Poor
sperm penetration assay results
Immunologic
infertility
Genetic
incompatibility
Collecting
the specimen
Sperms are usually collected
through masturbation, specially processed
and washed and inserted into the woman's
vagina, cervical canal or directlry into
her uterus. Placing sperm directlly into
the cervical canal increases the number
of sperms that may move through the reproductive
tract. Under normal conditions, less that
10 % of all sperm deposited naturally into
the vagina reach the cervix. If the woman
has poor or absent cervical mucus, the doctor
may insert the sperm directly into the uterine
cavity, thus increasing the chances of fertilization.
Great care must be taken in collection of
the sperm specimen to be used for insemination
purposes. The man must be willing to produce
a semen specimen usually at the clinic.
The couple will probably be asked to refrain
from intercourse for 48-72 hours ( but no
longer than 5 days ) before sperm collection
, to ensure possible specimen.
If the man is unable to produce a sperm
sample in the clinic he may have sexual
intercourse at home using a special condom
provided by the doctor. However, the sperm
of some men cannot survive the transport
form home to the clinic, because the sperm
do not stay active long enough to allow
this. Any questions or concerns about this
should be discussed with your doctor.
Other
treatment for Male Infertility
Medical
Treatine
unexplained oligoasthenospermia with
hormones.
Treating
infections
Treatment
of antisperm antibodies.
Surgical
Varicocele
repair
Vasovasostomy
Epididymovasostomy
Assissted
reproductive technologies ( ART )
There
are several procedures designed to unite
sperm and eggs, thus bypassing altogether
some of the factors causing infertility.
Collectively, these procedures are referred
to as assisted reproductive technologies.
Although, most couples do not require these
procedures to conceive, ART provides hope
for those who do not respond to other therapies.
ART procedure involves the use of various
hormones to stimulate the growth of as many
oocytes as possible. This multiple oocyte
developemt increases the chances for fertilization,
and subsequently, pregnancy. The most common ART procedures include:
• In vitro fertilization
• Gamete intrafallopian transfer (GIFT)
Gamete
Intarafallopian Transfer ( GIFT )
Gamete
intrafallopian transfer (GIFT) developed
in 1984 is another ART procedure used to
assist infertile couples. A mixture of sperm
and eggs is placed directly into one of
the woman's fallopian tubes during a laparoscopy.
Conception can occur in the fallopian tube.
Once fertilized, the embryo then travels
into the uterus, just as in a natural cycle.
As with other ART procedures, GIFT requires
that the woman's ovaries first be stimulated
with hormonal medication to encourage the
developement of multilple oocytes. This
enhances the possibility of fertilization.
With GIFT, fertilization takes place inside
the woman's body.
Advances
in ART Therapy
These
are several procedures associated ART techniques:
• Pituitary Down regulation
•
Cryopreservation
• Micromanipulation
Pituitary
Down Regulation
When
discussing ART therapies with the doctor
, the couple may hear the term down regulation.
This is achieved using induced medication
and shuts down pituitary gland. A down regulated
pituitary gland minimises the chance of
a premature LH surge. Such a surge usually
results in a cancelled ART cycle because
the eggs necessary to continue the procedure
cannot be retrieved.
Cryopreservation
Many
ART centres now have the ability to preserve
embryos not used in a particular ART cycle,
for future use. Once the embryos are frozen
and stored, they remain viable for long
periods of time. Not all frozen embryos
will survive thawing.
Cryopreservattion enables some embryos to
be used in the ART cycle and some to be
stored for future use in a natural cycle
( a cycle without hormonal stimulation).
Cryopreservation may also lower the cost
of subsequent ART procedures because the
first few stages ( ovarian stimulation,
egg retrieval) do not have to be repeated
when the frozen embryos are used.
Micromanipulation
In
men with radicallly reduced sperm numbers
or immotile and abnormal sperm, the sucess
of IVF has been limited. When sperm quality
is severely compromised, microsurgical interventions
such as gamete micromanipulation, may be
used. This procedure involves IVF combined
with a microscopic procedure direcred at
increasing the chance of fertilization.
It is especially effective for men with
very low sperm count or in couples who have
not found successs with routine IVF.
Many laboratories aroudndt the world are
doing considerable research to new approaches
in micromanipulation. Two of the more promising include
: • Intracytoplasmic sperm
injection (ICSI)
• Assisted hatching
Intracytoplasmic
Sperm injection ( ICSI )
ICSI
is a micromanipulation procedure whereby
a single sperm is injected into the egg.
This technique may provide men who have
very low amounts of weak sperms ( too low
for routine IVF )a chance to fertilize individual
eggs. If the egg is fertilized, the embryo
is inserted into the uterus.
ART
: Summary
The
success rate of ART technologies has improved
steadily since they were introduced in the
late 1970s. I n most of these cases, success
may require more than one attempt before
conception occurs, however, this is true
of even normally fertile couples who have
only 11% chance of pregnancy within any
given month. With the use of ART procedures,
infertile couples have a chance of achieving
pregnancy that compares favourably with
that of a fertile couple.
Conclusion
There
is hope for every infertile couple!!! Every
year, thousands of couples become parents
using the procedures and the medications
described in this booklet. If a specific
problem is causing infertility, the sooner
it is identified, the sooner you can begin
treatment to bring you and your partner
closer to achieving your goal. Do not delay
seeking professional help!
Medical or surgical treatment is available
for many of the factors that can cause infertility,
and success varies considerably depending
on the underlying problem. Overall, the
treatment for infertility is quite promising
about 65% of all couples treated for infertility
will eventually be successful in having
a baby.
For some couples, family building goals
can be achieved through adoption or foster
parenting. Others can choose to be child-
free and pursue different outlets for their
emotional nurturing energies.
What seems to be most helpful to all couples
is successfully working through the difficult
and consuming feeling of the infertility
experience to the point of acceptance and
resolution. By doing so, together you and
your partner may discover a new level of
understanding and a strengthened relationship.