Next, we’ll look at data that compares PCOS patients who took clomid alone or clomid accompanied by IUI (no studies use letrozole, so we are forced to use a study with clomid). Clomid alone produced a 17% live birth rate after 3 cycles, while clomid plus IUI produced a 19% live birth rate. Investigators concluded there was no statistically significant difference.
Risk of multiples. IUI with fertility medication carries a significant risk of multiple pregnancies, including higher-order multiples (triplets or more). A good clinic will carefully monitor your follicles to make sure that only a safe number are mature before the IUI, but they cannot entirely eliminate the risk. Recent advances in IVF (including blastocyst transfer) mean that most modern fertility clinics now transfer only one or two embryos per IVF cycle. As a result, the risk of multiple pregnancies for IVF patients is much lower than it used to be.
Amenorrhea (including hypothalmic amenorrhea) is a condition in which there is an absence of menstrual periods in a woman. There are two types of amenorrhea: primary and secondary. Treatment of amenorrhea depends on the type. In primary, surgery may be an option and in secondary amenorrhea medication or lifestyle changes may be treatment options. We go over the definition of amenorrhea, causes, and treatment options for amenorrhea.
Assisted hatching. About five to six days after fertilization, an embryo "hatches" from its surrounding membrane (zona pellucida), allowing it to implant into the lining of the uterus. If you're an older woman, or if you have had multiple failed IVF attempts, your doctor might recommend assisted hatching — a technique in which a hole is made in the zona pellucida just before transfer to help the embryo hatch and implant. Assisted hatching is also useful for eggs or embryos that have been previously frozen as the process can harden the zona pellucida.
Gonadotropins are another drug used to trigger ovulation. Gonadotropins are used if other drugs are not successful or if many eggs are needed for infertility treatments. Gonadotropins are given in a series of shots early in the menstrual cycle. Blood tests and ultrasound exams are used to track the development of the follicles. When test results show that the follicles have reached a certain size, another drug may be given to signal a follicle to release its matured egg.
As with any medical procedure, there are some risks to keep in mind. When choosing between IUI and IVF, the risk is certainly something to consider. The chances of experiencing either a miscarriage or multiples are concerns many have when deciding to undergo fertility treatments. So let’s take a look at the odds of either of these things occurring, plus a few other risks to be aware of.
In humans, infertility is the inability to become pregnant after one year of intercourse without contraception involving a male and female partner.[2] There are many causes of infertility, including some that medical intervention can treat.[3] Estimates from 1997 suggest that worldwide about five percent of all heterosexual couples have an unresolved problem with infertility. Many more couples, however, experience involuntary childlessness for at least one year: estimates range from 12% to 28%.[4] Male infertility is responsible for 20–30% of infertility cases, while 20–35% are due to female infertility, and 25–40% are due to combined problems in both parts.[2][5] In 10–20% of cases, no cause is found.[5] The most common cause of female infertility is ovulatory problems, which generally manifest themselves by sparse or absent menstrual periods.[6] Male infertility is most commonly due to deficiencies in the semen, and semen quality is used as a surrogate measure of male fecundity.[7]
IUI Preparation – Before your IUI procedure, men and women can make changes to their diet, add beneficial supplements or medications, and utilize holistic therapies like acupuncture and massage to ensure the best possible outcome from IUI. Taking this time to focus on improving the quality of your eggs pays off exponentially because it’s something you have the power to change. Best results are seen if adopted for 90 days prior to treatment.
The Rand Consulting Group has estimated there to be 400,000 frozen embryos in the United States in 2006.[83] The advantage is that patients who fail to conceive may become pregnant using such embryos without having to go through a full IVF cycle. Or, if pregnancy occurred, they could return later for another pregnancy. Spare oocytes or embryos resulting from fertility treatments may be used for oocyte donation or embryo donation to another woman or couple, and embryos may be created, frozen and stored specifically for transfer and donation by using donor eggs and sperm. Also, oocyte cryopreservation can be used for women who are likely to lose their ovarian reserve due to undergoing chemotherapy.[84]
The goal of this treatment is to increase the number of sperm that reach the Fallopian tube and subsequently increase the chance of fertilization. IUI provides the sperm an advantage by giving it a head start, but still requires the sperm to reach and fertilize the egg on its own. Depending on your fertility diagnosis, IUI can be coordinated with your normal cycle or with fertility medications.
The Fallopian tubes are the site for fertilization before the embryo makes its way to the uterine cavity for implantation. If the Fallopian tubes are damaged, fertilization may not occur. If one Fallopian tube is blocked, it may be due to inherent disease involving both Fallopian tubes; even if the other Fallopian tube is open, it may not be able to provide the appropriate nurturing environment for fertilization and early embryo growth to take place.

Intracytoplasmic sperm injection (ICSI): This procedure involves direct injection of a single sperm of the male partner into the eggs of the female for fertilization. Just like IVF procedure, in ICSI, the sperm and egg are collected from both the partners. The only difference is the fertilization process as in IVF the sperms and egg are mixed naturally, and in ICSI the sperms are injected into the egg using a needle.

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