In vitro fertilization (IVF) is a process of fertilization in which eggs (ova) from a woman's ovary are removed. They are combined with sperm outside the body in a laboratory procedure, and then the fertilized egg (zygote) is transferred to the same or another woman s uterus for a successful pregnancy.

IVF is one of the several assisted reproductive techniques (ART) used to help infertile couples to conceive a child.

Causes of Infertility

Blocked fallopian tubes
Hormonal imbalance
Endometriosis
Women with ovulation disorder
Uterine fibroids
In the man, low sperm count or poor quality sperm
Genetic disorder
Procedures
Two procedures are done to gain access to ovaries

It involves inserting the needle through the vagina (transvaginally). With the help of an ultrasound machine, the physician guides the needle to the location of the ovaries
In the other procedure, called laparoscopy, a small thin tube with a viewing lens is inserted through an incision in the navel. This lets physician to see inside the patient, and locate the ovaries.
Method
Without additional techniques, the chances of pregnancy would be extremely small. The additional techniques used in IVF include-

Ovarian hyperstimulation- Stimulation to induce development of multiple follicles of the ovaries.
Final maturation induction- Induction of final oocyte maturation is performed, generally by an injection of human chorionic gonadotropin (HCG), when the ovarian follicles have reached a certain degree of development. This is known as the "trigger shot  
Egg and sperm preparation- Semen is prepared for fertilization by removing inactive cells and seminal fluid in a process called sperm washing. An oocyte selection may be performed prior to fertilization to select eggs with optimal chances of successful pregnancy. 
Co-incubation- Eggs are removed from the woman and placed in one of the fallopian tubes, along with the man's sperm. This allows fertilization to take place inside the woman's body. Therefore, this variation is actually an in vivo fertilization, not in vitro.
Embryo culture- The main durations of embryo culture are until cleavage stage (day two to four after co-incubation) or the blastocyst stage (day five or six after co-incubation)
Embryo transfer- The number to be transferred depends on the number available, the age of the woman and other health and diagnostic factors. Embryos are transferred to the patient's uterus through a thin, plastic catheter, which goes through her vagina and cervix.
Aftercare
After the IVF procedure is performed the woman can resume normal activities. A pregnancy test can be done approximately 12-14 days later to determine if the procedure was successful.

Risks

Multiple pregnancies
Ectopic pregnancy
Ovarian rupture, bleeding
Infections
Complications of anesthesia

In Vitro Fertilization - Quick Facts!

It is as important for the man as it is for the woman to undergo certain tests before the IVF cycle is started. Fertility is not only an issue for a woman, but it also might be for the man in question. There are certain tests that need to be conducted on men before they can gear up for IVF:

1. Semen Analysis: One of the most important tests for male infertility is semen analysis. Sometimes, a man may be completely healthy, but his sperm production could be of poor quality. Semen analysis is done to provide an accurate evaluation of sperm number, the ability to move (motility), size and shape (morphology), as well as the consistency and volume of the sample collected.

2. Binding Test: Sometimes agglutination occurs where the sperms might stick to each other by their heads or tails. Sperm antibodies might cause this problem. The IVF treatment's success might be compromised if this happens. A simple binding test is done to determine this.

3. Trial Wash: This is also known as sperm wash. It is mostly done to remove chemicals from the sperm. Not doing a sperm wash might end up affecting the later stages of the IVF treatment. In this process, the misshapen and immotile sperm is separated so a clean sample of motile and healthy sperm can be collected.

4. TUNEL Assay: Since sperms build up about half of a child's genetic makeup, a TUNEL Assay or 'sperm DNA test' is required. This test is done to measure the sperm population that have fragmented DNA. Negative impacts on genetics can hamper the success of the fertility treatment.

TUNEL Assay is usually recommended to men with:
a) Leukocytes detected by the sperm analysis
b) Age approaching 50
c) A history of diabetes II type or prostatitis
d) Exposure to chemicals or prolonged heat at workplaces

5. Screening for Infectious Diseases: This test is done for both the partners to check for diseases like AIDS, Hepatitis C, and so on.

Tests Suggested for Men Before IVF

Egg Freezing, which is also known as mature oocyte cryopreservation, refers to the method through which reproductive potential is restored among women. Eggs get harvested from the ovaries, frozen and in an unfertilized manner and are stored for purpose of using them later on. The egg freezing procedure is recommended for those women, who would like to delay conceiving baby due to various kinds of reasons.

Before the freezing of eggs, it is important to first retrieve the eggs. Let us look at how the eggs are retrieved, followed by the procedure of egg freezing through two different ways.

Retrieval of Egg

Egg Retrieval takes place just like it is done in case of in vitro fertilization (IVF). Women would need to be put under medication for hormones or through injections, which shall lead to the stimulation of ovaries, leading to more eggs getting matured. After this women would receive the necessary medication to stimulate ovulation and then the extraction of eggs takes place through the use of a needle. Specialists perform this whole procedure by putting women under the effect of anesthesia and are also guided by ultrasounds. Once the extraction is completed, the freezing takes place.

There are two different techniques involved in the egg freezing process. They include:

Slow Egg Freezing Method

A substance called cryoprotectant is used in order to protect the biological tissues from getting damaged out of freezing. This slow freezing method of getting eggs freezed relies on low initial concentrations of crytoprotectant. The cryoprotectant in low concentration is introduced when the egg is at a relatively warm temperature and still continues to experience the usual functions of a living cell. Then the cryptoprotectant would spread all throughtout thus fill the egg, hence replacing most of the water inside the egg. The egg is then inserted into a small container made of plastic and ultimately get placed inside a cooling chamber. The lowering of temperature, to around -6 degree centigrade, takes place through injecting very tiny amounts of liquid nitrogen into the cooling chamber. The cooling process is controlled by a computer.

The main purpose of these techniques is to avoid ice crystals from getting formed in the egg. During the spreading of the cryoprotectant, if the ice crystals are still present, they can cause damage to the egg and hence the egg may not survive the process of thawing. Then the temperature is lowered further to around -32 degree centigrade. By this time, the egg s metabolic rate become slow. The container where the egg was placed, is then dipped inside the liquid nitrogen, forming a solid.

Rapid Egg Freezing Method or Vitrification

At the time of rapid freezing method, there is high concentration of initial cryoprotectant whereas the cell remains at room temperature. The egg is unable to stay for long in this temperature and thus gets poured immediately onto the liquid nitrogen. Cryoprotectant spreads at a rapid rate so as to avoid ice-crystal from getting damaged. Vitrification is a very new method for freeing eggs. Recent research has shown that vitrification of eggs largely improves the possibility for survival after thawing and the rates of pregnancy.

Different Techniques That Can Be Used For Egg Freezing!

Intrauterine insemination (IUI) and in vitro fertilization (IVF) are two commonly used methods of fertility treatment, which increase a couple s chance of becoming pregnant.

The Procedure

IUI- IUI is a procedure during which processed and concentrated motile sperm are inserted directly into a woman s uterus. This procedure is timed according to a woman s ovulation, and may be performed one to two times in the days immediately following the detection of ovulation. After ovulation a woman s egg is picked up by the fallopian tube and waits there for the sperm. Since the IUI procedure deposits higher concentrations of good quality sperm close to where the egg is waiting, the chances that the egg and sperm will find one another are increased.

IVF- IVF is the most successful method of fertility treatment utilized today to help couples to conceive. The basic components of the IVF process include stimulation of the ovaries to produce multiple eggs at a time, removal of the eggs from the ovary (egg retrieval), fertilization of the eggs in the laboratory, and subsequent placement of the resulting embryos into the uterus (embryo transfer). The chance of pregnancy from IVF depends primarily on the age of the woman, the cause of infertility, and factors related to the quality of the IVF laboratory.

Success Rates

IUI Treatment: There is a marked difference between IVF and IUI pregnancy rates. IUI has a success rate between 5% and 20%, but it can even be as low as 1-2 %, depending on the woman s age and fertility levels. The chances of conceiving through IUI is higher if fertility drugs are administered along with the treatment.

IVF Treatment: IVF has a high success rate   between 20% and 35% and it can even go as high as 40%. This may not seem like a lot, but it is very high, considering that an average young and fertile couple has only a 15-20% chance to conceive in a month. It is important to understand what IVF and IUI success rates mean and the factors that affect it before deciding on a fertility treatment. You can also use any reliable online IUI vs IVF comparison tool to determine your approximate success rates with each of these treatments, depending on your age, lifestyle, and medical history.

You should use online sources of information to understand more about fertility problems, how age affects fertility levels, and whether freezing your eggs is a good option for you. However, discuss all these issues with your doctor to ensure that you have the right information and that you have understood it correctly. Fertility specialists provide you with personalized fertility plans based on your health which is why you should always talk to them before you make any decision.

IVF or IUI - Which One Should You Opt for?

Factors that determine the success of your IVF procedure

IVF or In Vitro Fertilization is a process wherein an egg is fertilized by a sperm in a laboratory dish to form the embryo (baby's first cell) which after growth in artificial medium in the lab is transferred into the uterus of women, In general, a blood sample is collected to determine whether you're pregnant or not about 10-14 days after the eggs are retrieved.

Coming to the success of the procedure, a number of factors are at play and these are:

The age at which you get pregnant

A factor that plays a role in influencing your chances of experiencing success in your IVF procedure is the age at which you opt for this procedure. The lower your age, the chances that you may get pregnant and deliver a healthy child using your own eggs witness an increase. On the other hand, if you're aged 41 and above, or your egg reserve is very low donor eggs are the most preferred option as they help to increase your prospects of meeting a success.

Lifestyle habits

Certain lifestyle factors can significantly affect your prospects of getting pregnant through this route. Smoking can reduce your prospect of success using this procedure by about 50%. It can cause you to have lesser number of eggs retrieved during the procedure while increasing instances of miscarriages. Likewise, obesity, alcohol use, consumption of excessive caffeine and drugs can adversely affect your chances of getting pregnant using IVF.

Cause of Infertility

If your supply of eggs is normal, success rate using IVF is high. Women who suffer from the problem of endometriosis experience lesser chances of getting pregnant than women who have unexplained fertility.

Reproductive history

IVF success rate chances are higher if you've delivered a baby previously using IVF.

Embryo status

Embryos that are better developed with good grade stand a higher chance of experiencing success than less developed embryos. More importantly, not every embryo is able to survive the development process.



What are the factors that determine the success of your IVF procedure?

Frozen Embryo Transfer or FET is an extremely effective method to conceive a pregnancy. Recent studies have proved that there is a increased chance for pregnancy when the embryos, which get used are frozen and get placed inside the uterus at a time right after the ovaries are stimulated. Still, certain issues can arise with the transfer of frozen embryo, such as:

A Thin Lining of the Uterus
Research has shown that there are not many women who get pregnant if the lining in their uterine does not tend to thicken enough. It is not clear exactly why this problem occurs in most women and moreover there is no sure shot treatment to make the lining of the uterine thick. The experts on fertility would try out different methods like increasing the amount of estrogen or change the way how estrogen is given. There are other instances when women might be given supplemental medicines, while for some, the problem will continue to exist.

What Should Be Done In Case The Problem Persists?

In case the problem continues for some women, then there are certain approaches which experts might look to adopt. The first one is to cancel the transfer of embryo and try once again at any later stage, that too with a different treatment method.
The second option which they could think of is to go ahead with the transfer, wherein they might feel that a thin lining does not necessarily mean that it is impossible for a woman to get pregnant but definitely the efficiency would be reduced.
One last option is to make use of the opportunity for undergoing additional tests which would help them to assess the ability of the uterus to allow implantation of the embryos.
Unexpected Ovulation
For enabling the embryos to get implanted into uterus, placing them very precisely and at the appropriate time is important. This is regarded as the window of implantation. The time taken, is based on the time frame since progesterone reaches the lining of the uterine.

Doctor knows the exact time to place the embryos, right from the time he or she instructs a woman to start having progesterone supplements. In case a woman was to ovulate, the production of progesterone would begin earlier than the normal time and would lead to the shift of the window of implantation. As identifying the correct time of ovulation is almost impossible, so that would lead to some sort of uncertainty into the timing.

Due to this reason, there are doctors who would use medication in order to prevent unexpected ovulation from occurring. Generally an injection called Lupron is usually used as medication.

Timing for the Embryo Transfer is Inappropriate
This is a problem related to early ovulation. There are case when the implantation window is shifted, still the timing of the transfer becomes accurate. Recent studies have shown that quite a nominal percentage of women might have a window of implantation, which could be either earlier or later than normal time. A test called the Endometrial Receptivity Array can help determine at what time is the window of implantation open.

Frozen Embryo Transfer - Complications Associated With It!

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