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Impact factors of the success rate of IVFIVF or artificial insemination, infertility treatment has become one of the standard operations. However, artificial insemination and IVF pregnancy success rate is still not hundred percent, there are some factors that may affect IVF and artificial insemination success rate. Some people will be able to do a successful artificial insemination pregnancy; Some people will be able to do a successful IVF; But some people have done many times before IVF is still no way to succeed. Even need to be done 56 times to be successful, the impact of these factors to the success of what?1, semen quality: the number and motility of sperm, fertilized eggs can decide the case, if the sperm count sperm per cc for ten million or less than 30% activity, it will recommend IVF, not suitable for artificial insemination; if less than five million per cc or less than 20% activity, it is recommended to do IVF, without making gifts baby; if less than one million per cc or activity is less than 10 %, need to do ICSI (single sperm microinjection) IVF 2, egg quality: a woman older, poorer quality eggs. Over 35 years of age, egg quality begins to age, over 38 years of age is less than 50% success rate, the success rate will be discounted, it will play on the break, and 40 years of age, the success rate of only 30% of three young embryo quality: the quality of the embryo, IVF success rates are an important factor in good embryos likely to be successful, not successful embryo is not easy. So, three good embryos pregnancy rate of 250%. Of course, more embryos implanted more likely to succeed, but also increase the relative risk of multiple births, a good embryo from a good egg, sperm and stable good laboratory culture system 4, embryo implantation: is a test tube Baby one of the elements of success, proper implantation of the embryo within easy location, it is easy to increase the success rate. Gift Baby is the egg and sperm in the fallopian tubes, the success rate is about 4050%. TET pregnancy rate of about 4050%, why TET with the gift babies IVF pregnancy rates than traditional high? Because there are some beneficial tubal embryo culture factor, if the sperm, eggs or embryos placed in the fallopian tube, will increase the success rate of IVF 5, endometrial qualities: embryo implantation endometrium is the place, endometrial If thick enough blood cells divide rich and good, will increase the embryo implantation rate, contrary endometrium is too thin, insufficient blood flow, hormonal deficiency endometrium, embryo implantation is not easy. When the embryo implantation, uterine contractions will be action, sometimes even pushed to the fallopian tube embryo, and become ectopic pregnancy, the rate of up to 57%. So, after implantation to full bed rest, and add enough progesterone to increase implantation rates reduce the rate of ectopic pregnancy.