in vitro fertilization and embryo transfer pdf

In Vitro Fertilization And Embryo Transfer Pdf

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In vitro fertilization IVF is the joining of a woman's egg and a man's sperm in a laboratory dish. In vitro means outside the body. Fertilization means the sperm has attached to and entered the egg. Normally, an egg and sperm are fertilized inside a woman's body.

In vitro fertilization (IVF)

During in vitro fertilization, eggs are removed from mature follicles within an ovary A. An egg is fertilized by injecting a single sperm into the egg or mixing the egg with sperm in a petri dish B. The fertilized egg embryo is transferred into the uterus C. In vitro fertilization IVF is a complex series of procedures used to help with fertility or prevent genetic problems and assist with the conception of a child. During IVF , mature eggs are collected retrieved from ovaries and fertilized by sperm in a lab.

Then the fertilized egg embryo or eggs embryos are transferred to a uterus. One full cycle of IVF takes about three weeks. Sometimes these steps are split into different parts and the process can take longer. IVF is the most effective form of assisted reproductive technology. The procedure can be done using your own eggs and your partner's sperm.

Or IVF may involve eggs, sperm or embryos from a known or anonymous donor. In some cases, a gestational carrier — a woman who has an embryo implanted in her uterus — might be used.

Your chances of having a healthy baby using IVF depend on many factors, such as your age and the cause of infertility. In addition, IVF can be time-consuming, expensive and invasive.

If more than one embryo is transferred to your uterus, IVF can result in a pregnancy with more than one fetus multiple pregnancy. Your doctor can help you understand how IVF works, the potential risks and whether this method of treating infertility is right for you. In vitro fertilization IVF is a treatment for infertility or genetic problems. If IVF is performed to treat infertility, you and your partner might be able to try less-invasive treatment options before attempting IVF , including fertility drugs to increase production of eggs or intrauterine insemination — a procedure in which sperm are placed directly in your uterus near the time of ovulation.

Sometimes, IVF is offered as a primary treatment for infertility in women over age IVF can also be done if you have certain health conditions. For example, IVF may be an option if you or your partner has:. Fertility preservation for cancer or other health conditions. If you're about to start cancer treatment — such as radiation or chemotherapy — that could harm your fertility, IVF for fertility preservation may be an option.

Women can have eggs harvested from their ovaries and frozen in an unfertilized state for later use. Or the eggs can be fertilized and frozen as embryos for future use. Women who don't have a functional uterus or for whom pregnancy poses a serious health risk might choose IVF using another person to carry the pregnancy gestational carrier. In this case, the woman's eggs are fertilized with sperm, but the resulting embryos are placed in the gestational carrier's uterus.

Ovarian hyperstimulation syndrome. Use of injectable fertility drugs, such as human chorionic gonadotropin HCG , to induce ovulation can cause ovarian hyperstimulation syndrome, in which your ovaries become swollen and painful. Symptoms typically last a week and include mild abdominal pain, bloating, nausea, vomiting and diarrhea.

If you become pregnant, however, your symptoms might last several weeks. Rarely, it's possible to develop a more severe form of ovarian hyperstimulation syndrome that can also cause rapid weight gain and shortness of breath. When choosing an in vitro fertilization IVF clinic, keep in mind that a clinic's success rate depends on many factors, such as patients' ages and medical issues, as well as the clinic's treatment population and treatment approaches. Ask for detailed information about the costs associated with each step of the procedure.

Before beginning a cycle of IVF using your own eggs and sperm, you and your partner will likely need various screenings, including:. Before beginning a cycle of IVF , consider important questions, including:. How many embryos will be transferred? The number of embryos transferred is typically based on age and number of eggs retrieved.

Since the rate of implantation is lower for older women, more embryos are usually transferred — except for women using donor eggs or genetically tested embryos. Most doctors follow specific guidelines to prevent a higher order multiple pregnancy — triplets or more — and in some countries, legislation limits the number of embryos that can be transferred.

Make sure you and your doctor agree on the number of embryos that will be transferred before the transfer procedure. What will you do with any extra embryos? Extra embryos can be frozen and stored for future use for several years. Not all embryos will survive the freezing and thawing process, although most will.

Cryopreservation can make future cycles of IVF less expensive and less invasive. Or, you might be able to donate unused frozen embryos to another couple or a research facility. You might also choose to discard unused embryos.

Typically, transvaginal ultrasound aspiration is used to retrieve eggs. During this procedure, an ultrasound probe is inserted into your vagina to identify follicles, and a needle is guided through the vagina and into the follicles. The eggs are removed from the follicles through the needle, which is connected to a suction device. In intracytoplasmic sperm injection ICSI , a single healthy sperm is injected directly into each mature egg. ICSI is often used when semen quality or number is a problem or if fertilization attempts during prior in vitro fertilization cycles failed.

Three days after fertilization, a normally developing embryo will contain about six to 10 cells. By the fifth or sixth day, the fertilized egg is known as a blastocyst — a rapidly dividing ball of cells. The inner group of cells will become the embryo. The outer group will become the cells that nourish and protect it. IVF involves several steps — ovarian stimulation, egg retrieval, sperm retrieval, fertilization and embryo transfer. One cycle of IVF can take about two to three weeks, and more than one cycle may be required.

If you're using your own eggs during IVF , at the start of a cycle you'll begin treatment with synthetic hormones to stimulate your ovaries to produce multiple eggs — rather than the single egg that normally develops each month. Multiple eggs are needed because some eggs won't fertilize or develop normally after fertilization.

Typically, you'll need one to two weeks of ovarian stimulation before your eggs are ready for retrieval. To determine when the eggs are ready for collection, your doctor will likely perform:. Sometimes IVF cycles need to be canceled before egg retrieval for one of these reasons:. If your cycle is canceled, your doctor might recommend changing medications or their doses to promote a better response during future IVF cycles.

Or you may be advised that you need an egg donor. Egg retrieval can be done in your doctor's office or a clinic 34 to 36 hours after the final injection and before ovulation. If you're using your partner's sperm, he'll provide a semen sample at your doctor's office or a clinic through masturbation the morning of egg retrieval. Other methods, such as testicular aspiration — the use of a needle or surgical procedure to extract sperm directly from the testicle — are sometimes required.

Donor sperm also can be used. Sperm are separated from the semen fluid in the lab. Embryo transfer is done at your doctor's office or a clinic and usually takes place two to five days after egg retrieval.

If successful, an embryo will implant in the lining of your uterus about six to 10 days after egg retrieval. After the embryo transfer, you can resume normal daily activities. However, your ovaries may still be enlarged. Consider avoiding vigorous activity, which could cause discomfort. If you develop moderate or severe pain after the embryo transfer, contact your doctor.

He or she will evaluate you for complications such as infection, twisting of an ovary ovarian torsion and severe ovarian hyperstimulation syndrome. About 12 days to two weeks after egg retrieval, your doctor will test a sample of your blood to detect whether you're pregnant.

The chances of giving birth to a healthy baby after using IVF depend on various factors, including:. Talk with your doctor about any factors that apply to you and how they may affect your chances of a successful pregnancy. Explore Mayo Clinic studies of tests and procedures to help prevent, detect, treat or manage conditions.

Our patients tell us that the quality of their interactions, our attention to detail and the efficiency of their visits mean health care like they've never experienced. See the stories of satisfied Mayo Clinic patients.

Photo courtesy of Melissa Zamzow. Lacey Berning dreamed of having a little girl. What she never imagined, however, was that the journey to that child would be wrought with delays and heartache.

But Lacey never gave up hope, and with support from a team of Mayo Clinic infertility specialists, she and her husband finally realized [ Mayo Clinic does not endorse companies or products.

Advertising revenue supports our not-for-profit mission. Don't delay your care at Mayo Clinic Schedule your appointment now for safe in-person care. This content does not have an English version. This content does not have an Arabic version. Overview In vitro fertilization Open pop-up dialog box Close. In vitro fertilization During in vitro fertilization, eggs are removed from mature follicles within an ovary A. Request an Appointment at Mayo Clinic.

Egg retrieval technique Open pop-up dialog box Close. Egg retrieval technique Typically, transvaginal ultrasound aspiration is used to retrieve eggs. Blastocyst Open pop-up dialog box Close. Blastocyst Three days after fertilization, a normally developing embryo will contain about six to 10 cells.

In vitro fertilization (IVF)

Skip to main content Skip to table of contents. Advertisement Hide. This service is more advanced with JavaScript available. Human in Vitro Fertilization and Embryo Transfer. Front Matter Pages i-xiv. Pages

We divided patients who underwent cycles into three groups: 1 previous history of endometriosis but normal pelvis at the time of oocyte retrieval, 2 stages I—II endometriosis revised AFS classification , and 3 stages III—IV endometriosis. The stimulation protocols, estradiol E 2 responses, and distribution of terminal E 2 patterns were similar in all groups. Group 3 had significantly fewer preovulatory and immature oocytes retrieved and fewer embryos transferred. The miscarriage rate was higher in group 3, and the on-going pregnancy rate per cycle was lower, Luteal phase E 2 and progesterone levels were comparable in all groups. No differences were found when groups 2 and 3 were analyzed for the presence of one or two ovaries or the presencelabsence of ovarian endometriosis.

In Vitro Fertilization for Infertility

During in vitro fertilization, eggs are removed from mature follicles within an ovary A. An egg is fertilized by injecting a single sperm into the egg or mixing the egg with sperm in a petri dish B. The fertilized egg embryo is transferred into the uterus C. In vitro fertilization IVF is a complex series of procedures used to help with fertility or prevent genetic problems and assist with the conception of a child. During IVF , mature eggs are collected retrieved from ovaries and fertilized by sperm in a lab.

NCBI Bookshelf. The scientific advances that today permit clinicians and veterinarians to use such procedures as drug therapy, laser surgery, artificial insemination, in vitro fertilization, and embryo transfer to combat human infertility or improve the productive capabilities of valuable animals are the results of the work of generations of investigators. Sometimes these achievements came about because of research aimed at resolving specific problems related to human infertility or toward enabling livestock owners to improve the return on their investments. More often, however, scientific advances result from the inquiries of scientists investigating fundamental biological processes in the absence of specific applications.

Extensive research has been conducted in domestic animals, particularly in cattle, in the reproductive technologies of sperm handling, capacitation, and acrosome reaction, superovulation, and embryo handling, sexing, bisection, cryopreservation, and transfer. Because of the economic importance of cattle these technologies have been tested and improved under clinical conditions: The results of employing these procedures are available on tens of thousands of pregnancies and offspring. This information has implications in applying some of the same technologies in human reproduction. The large number of normal progeny produced in cattle after a long prenatal development period, similar to humans, provides some assurance that these technologies, carefully applied, are safe. The basis for these conclusions is documented in the publications cited in this review.

Jump to content. During in vitro fertilization IVF , eggs and sperm are brought together in a laboratory glass dish to allow the sperm to fertilize an egg. With IVF, you can use any combination of your own eggs and sperm and donor eggs and sperm. After IVF, one or more fertilized eggs are placed in the uterus. Ovulation and egg retrieval.

 Сьюзан, это же абсолютно ясно. Танкадо выгравировал ключ Цифровой крепости на кольце. Золото долговечно. Что бы он ни делал - спал, стоял под душем, ел, - ключ всегда при нем, в любую минуту готовый для опубликования.

Забудьте о ней! - Он отключил телефон и запихнул за ремень. Больше ему никто не помешает. В двенадцати тысячах миль от этого места Токуген Нуматака в полной растерянности застыл у окна своего кабинета.

 - Стратмор хмуро посмотрел на нее и двинулся к двери.  - Но будем надеяться, что он этого не узнает.

Беккер нахмурился. - Я вовсе не хочу с ней переспать. Мне нужно с ней поговорить.

 Сьюзан, я хочу кое о чем тебя спросить.  - Звук его голоса гулко раздался в комнате оперативного управления, и все тут же замерли, повернувшись к экрану. - Сьюзан Флетчер, выйдете за меня замуж. В комнате зашушукались.

На этот раз Стратмор позволил себе расхохотаться во весь голос. - Твой сценарий мне понятен. ТРАНСТЕКСТ перегрелся, поэтому откройте двери и отпустите. - Именно так, черт возьми. Я был там, внизу.

В интересах сохранения в тайне этого успеха коммандер Стратмор немедленно организовал утечку информации о том, что проект завершился полным провалом. Вся деятельность в крыле, где размещалась шифровалка, якобы сводилась к попыткам зализать раны после своего фиаско ценой в два миллиарда долларов. Правду знала только элита АНБ - ТРАНСТЕКСТ взламывал сотни шифров ежедневно. В условиях, когда пользователи были убеждены, что закодированные с помощью компьютера сообщения не поддаются расшифровке - даже усилиями всемогущего АНБ, - секреты потекли рекой. Наркобароны, боссы, террористы и люди, занятые отмыванием криминальных денег, которым надоели перехваты и прослушивание их переговоров по сотовым телефонам, обратились к новейшему средству мгновенной передачи сообщений по всему миру - электронной почте.

На экране высветилось: СЛЕДОПЫТ ОТПРАВЛЕН Теперь надо ждать. Сьюзан вздохнула. Она чувствовала себя виноватой из-за того, что так резко говорила с коммандером. Ведь если кто и может справиться с возникшей опасностью, да еще без посторонней помощи, так это Тревор Стратмор. Он обладал сверхъестественной способностью одерживать верх над всеми, кто бросал ему вызов.

Какие же страшные были у него руки. - Вот тут-то вы и рассмотрели его кольцо. Глаза Клушара расширились. - Так полицейский сказал вам, что это я взял кольцо. Беккер смущенно подвинулся.

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  1. Lance D.

    The in vitro fertilization process breaks down into three essential components: induction of ovulation, fertilization of the oocyte, and development of embryos that are transferred into the uterus. Problems may arise resulting in failure at any one of these junctions.

    10.05.2021 at 14:45 Reply
  2. Ascla B.

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    12.05.2021 at 05:32 Reply

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