In vitro fertilization in nature includes fish and amphibians, which means that * * * combines with eggs in vitro to produce fertilized eggs. This form of fertilization is usually carried out in water. * * * You can use the ability to move in the water to swim to the egg and combine with it. In humans, eggs released from the ovaries enter the uterus along the fallopian tubes in order to conceive. There are many attacks on fallopian tubes, one of which must successfully enter the egg to give birth to new life. If a woman's fallopian tube is blocked, she can't get pregnant. In vitro fertilization is used to help those who cannot be fertilized for various reasons. If the father can't provide * * *, you can take * * * from the * * * library to replace it, because the probability of success is still very small, and it is usually necessary to put multiple fertilized eggs into the mother's uterus.
What is in vitro fertilization: Precautions for in vitro fertilization In vitro fertilization is used to help those who cannot be fertilized for various reasons. If the father can't provide * * *, you can take * * * from the * * * library to replace it, because the probability of success is still very small, and it is usually necessary to put multiple fertilized eggs into the mother's uterus.
Take the mature egg out of the body and combine it with * * * *. Suitable for patients in tubal nowhere. Eggs and * * * are usually taken from both husband and wife. If one of them can't provide normal eggs, it can also be provided by others. A fertilized egg is cultured in vitro in a test tube or vessel for one stage, and then implanted into a woman's uterus. This process is called embryo transfer. If the woman's uterus is insufficient to conceive, the fertilized egg can also be transplanted into the uterus of other women, and the baby will be returned to the egg donor himself after delivery. Because early embryos are successfully cultivated in test tubes or utensils, babies born are also called test-tube babies. Luis brown, the world's first test-tube baby, was born in England on July 25th, 1978. 1988 March 10, the first test-tube baby in Chinese mainland was born in the Third Hospital of Beijing Medical University.
What is in vitro fertilization? In vitro fertilization must go through several difficult and complicated steps to welcome a healthy baby. These processes are: promoting superovulation; Collect eggs; Fertilize with health; More than one embryo was transplanted into the uterus; Smooth pregnancy to full term; Delivery.
Ensure the supply of eggs
In order to ensure the successful pregnancy of in vitro fertilization patients, it is necessary to collect multiple eggs for later use. Under normal circumstances, women only ovulate one egg per ovulation period, but in the process of in vitro fertilization, patients need to inject gonadotropin-releasing hormone (GnRH) combined with follicle hormone (FSH) and other ovulation-promoting drugs, and * * * ovary produces multiple eggs at the same time.
In the next week or weeks, you need to have an ultrasound examination every day to monitor the development of eggs. When the egg matures, the follicle grows and the estrogen secretion increases. The estrogen level can be checked from the blood test report. Combined with routine ultrasound examination and monitoring, the degree of follicular development can be accurately calculated.
Collect eggs
Doctors use ultrasonic technology to collect mature eggs and fertilize them with their husbands (or donors). Microanesthesia or local anesthesia is mostly used in egg retrieval surgery, and general anesthesia is less. You need to rest in the hospital for a few hours after the operation.
Confirm pregnancy
Mix the collected mature eggs with * * *, wait 18 hours, and look for fertilized eggs under the microscope. Few eggs are fertilized and developed into embryos, usually there are 2 ~ 3 eggs. The fertilized egg should be cultured for more than 48 hours. When the fertilized egg meiosis into 2 or 4 cells, we should select the embryos without defects and implant at least 2 embryos into the uterus. As we all know, this treatment is prone to multiple pregnancies. Maybe someone will advise you to implant an embryo. You should discuss this with your doctor.
Advanced assisted reproductive technology
Micromanipulation is an excellent medical technology, through which embryologists can skillfully handle eggs and singles. This technique has been widely used in clinical treatment successfully. * * * Very few inactive men can fertilize eggs. Thousands of children created through assisted reproduction are now alive and well, and they are witnesses to this technology.
Basic inspection
Jane's doctor said so. After thinking about it for a week, Peter decided to go to the hospital with Jane. The doctor carefully read the history of Peter's nonspecific urethritis (NSU), because reproductive diseases can affect fertility. Mumps virus may cause orchitis, destroy the future manufacturing capacity of * *, and cause other problems. Peter 12 suffered from mumps when his testicles were very fragile.
Check it again
Although the number of * * * is small and the vitality is low, the doctor encourages that at least Peter has * * *, and some of them are full of energy. That is to say, even if Peter's * * * fails in the egg penetration test, doctors can still use advanced assisted reproductive technology (ART), that is, intracytoplasmic single * * * microinjection-injecting single * * * into one of Jane's eggs-to help Jane get pregnant and give birth to a healthy baby.
What is in vitro fertilization: complications of in vitro fertilization
Three common complications: ectopic pregnancy, multiple pregnancy and ovarian hyperfunction syndrome.
1: ectopic pregnancy, the high risk factors are pelvic adhesion, bilateral tubal obstruction, tubal plastic surgery, etc. Of course, not all patients with the above conditions will definitely have ectopic pregnancy. Intrauterine and ectopic pregnancy occur at the same time. Most intrauterine pregnancies can continue after excision of ectopic pregnancy focus and abortion treatment.
2. Multiple pregnancies are prone to multiple births in the process of ovulation induction and IUI. Multiple pregnancy is prone to abortion, premature delivery, pregnancy-induced hypertension, premature rupture of membranes, postpartum hemorrhage and other pregnancy complications. Premature infants have weak vitality and difficult survival, and are prone to complications such as neonatal intracranial hemorrhage, cerebral palsy and neonatal respiratory distress syndrome. Therefore, if you are pregnant with three or more fetuses, you must reduce the number of fetuses in 7-8 weeks.
3.* * Some patients with ovarian hyperplasia syndrome (OHSS) will develop OHSS 3- 10 days after HCG injection. The clinical manifestations are abdominal distension, ascites (even pleural effusion), gastrointestinal discomfort, oliguria, shortness of breath, chest tightness, enlarged abdominal circumference and weight gain. B-ultrasound showed bilateral ovarian enlargement and other symptoms. OHSS is the most serious complication in ovulation induction. Mild OHSS does not require special treatment, while moderate and severe OHSS requires hospitalization observation and treatment. Patients with OHSS can eat normally, while patients with abdominal distension can eat less and more meals, mainly foods with high protein and easy digestion and absorption. Avoid overwork, strenuous exercise, abdominal oppression and collision. After active treatment, most patients can survive safely.
Health tips suggest that couples undergoing in vitro fertilization will face painful treatment, and both husband and wife should receive psychological support. The counselor will explain the treatment process and stages in detail for the couple and answer all the questions of the couple. Need to be reminded that each stage of treatment will produce different feelings, which is normal, and you need to talk to each other and communicate with psychologists without reservation. The moment of successful pregnancy is destined to be one of the sweetest scenery in their lives. At that time, all the hard work will vanish.