The arrival of each three generations of test-tube babies is not accidental luck, but a life expedition that crosses many obstacles. From the encounter of a cell to a loud cry, under the escort of science, they passed ten tests and finally became the "brave men of life" who came to the world.
The starting point of this challenge begins with the ovulation promotion process.
,.Unlike the ovaries that only breed one egg in the natural cycle, doctors will customize an exclusive drug plan based on the patient's age, ovarian function and other individual conditions, and use 8 to 15 days to gently stimulate the ovaries to cultivate multiple follicles, which will provide for subsequent life. Reserve enough "candidates" for combination.
,,B,,.Doctors will flexibly adjust the dose of the drug accordingly. When the follicles are approaching maturity, inject a "night needle" to trigger the final maturity of the egg, laying a solid foundation for the upcoming egg retrieval operation.
After egg retrieval, the egg and sperm meet and combine in a simulated physiological environment in the laboratory. The early embryos formed will not be transferred immediately, but will continue to be cultured until the blastocyst stage on the fifth to sixth days. This is the process of "nurturing the cyst" and a cruel natural elimination.
After egg retrieval, the eggs and sperm meet and combine in a simulated physiological environment in the laboratory. The early embryos formed during this process are not transplanted immediately. Instead, they are allowed to continue developing until reaching the blastocyst stage at day 5 or 6. This process is known as “blastocyst culture,” and it involves a process of natural selection where some embryos will be eliminated.
,()(,).Compared with early embryos, blastocysts have a more stable structure and are more adaptable during implantation. Those embryos with insufficient development potential are often difficult to support to the blastocyst stage. Those who can survive successfully are undoubtedly the "best" among embryos.
This is the core level of the third-generation test tube technology and a key step that distinguishes it from traditional test tubes-preimplantation genetic testing (PGT) of embryos.
,--(PGT).Embryologists will carefully take a small number of cells from the trophoblast of the blastocyst for biopsy, and conduct genetic analysis through professional techniques. They can not only screen for abnormalities in the number and structure of chromosomes, but also screen for single genetic diseases, covering more than 300 genetic diseases. Sexual disease.
“”,,.Test results usually take 2 to 3 weeks to wait, and healthy embryos that pass the screening will be frozen and stored for the right time for transplantation.
Cryopreserved embryos need to go through the critical test of thawing to restart the life process.
,.The current mainstream vitrification technology can allow embryos to enter a frozen state in a very short time, minimizing cell damage
The thawing operation has a strict standardized process, and every step needs to be accurately controlled. The thawed embryos will be allowed to stand and recover in a dedicated culture medium for a period of time. The embryologist will carefully evaluate their survival status and confirm that they are full of vitality before entering the next round.
Embryo transfer is a delicate and gentle operation that requires no anesthesia and can be completed in just a few minutes.
,,.Under the real-time guidance of B-ultrasound, the doctor will gently transport the embryo into the appropriate position of the uterine cavity through a slender hose to build a stable "habitat" for it.
The choice of timing for transplantation directly affects the success rate of implantation. Doctors will closely monitor the thickness and shape of the endometrium. When the endometrial thickness reaches the “optimal range” of 8 to 14 mm, it becomes the suitable time for embryo transfer, providing optimal conditions for embryo implantation.
The end of the transplant is not a success. The embryo still needs to complete the delicate rooting process of "implantation".
,“”.The blastocyst usually attempts to attach to the uterine wall 2 to 5 days after transfer, slowly invades the endometrium, starting the first step in taking root in life.
,,.In a suitable uterine environment, the probability of implantation of high-quality embryos will be significantly increased. Some women may experience slight bleeding or dull abdominal pain during this period, which is a normal physiological reaction. Maintaining a calm mind and avoiding excessive anxiety can instead create more favorable conditions for embryo implantation.
Even if the embryo is successfully implanted, it needs to pass the hidden barrier of biochemical pregnancy.
,.The so-called biochemical pregnancy, that is, blood HCG test shows pregnancy, but the embryo subsequently stops developing, HCG level drops, and clinical pregnancy fails to form.
PGT,,,.Blood HCG testing 14 days after transplantation is a key point for confirming early pregnancy. If the HCG level can double normally, it means that the embryo is developing steadily.
Empty sac pregnancy refers to the formation of the gestational sac, but there is no embryo development or the embryo stops growing halfway. This is a challenge that is difficult to completely avoid during embryonic development.
,,,.Even embryos with normal chromosomes screened by PGT may encounter the risk of empty cysts due to factors such as maternal endocrine abnormalities, poor uterine environment, and infection.
Regular ultrasound examinations are the main way to detect empty cysts in a timely manner. Once diagnosed, immediate medical intervention is necessary. Doctors will analyze the reasons based on the situation, providing valuable information for subsequent treatment and transplantation procedures, thus helping to ensure success in the next step of treatment.
Theemergence of the fetal heart is a landmark moment in this life expedition, marking that the embryo has successfully developed into a surviving fetus.
,,.The normal heart rate of the third generation of test-tube babies ranges from 120 to 160 beats per minute. Doctors will monitor the fetal heart beat through B-ultrasound, which is a core indicator for assessing fetal development.
,,,.If abnormal fetal heart rate occurs, it may indicate that the fetus is in distress, and doctors need close monitoring and timely intervention to protect every beat of life.
Even after precise screening by PGT, NT testing in the first trimester is still indispensable. It is an important supplement to pre-implantation screening of embryos and adds another protective net to fetal health.
PGT,NT,,.NT examination, which is the measurement of the thickness of the transparent layer of the fetus's neck, is usually performed between 11th to 13th weeks of pregnancy +6 days. B-ultrasound is used to assess the risk of the fetus developing chromosomal abnormalities and congenital malformations.
NT,.This step is to eliminate potential risks that PGT fails to cover, ensure the health of the fetus in the early stages of development, and protect the subsequent pregnancy.
After passing ten levels, the third generation of test-tube babies entered a stable pregnancy stage, but scientific protection never stopped.
,,.Regular prenatal check-ups are an important part throughout pregnancy. Doctors will monitor maternal blood pressure, weight, and blood indicators, track fetal development, fetal position, placental thickness, and amniotic fluid volume through B-ultrasound, and promptly investigate potential problems.
,,.By maintaining a regular work and rest, a balanced diet, supplementing appropriate amounts of folic acid and vitamin D, and staying away from harmful substances, expectant mothers can create a stable development environment for the fetus.
From a tiny blastocyst to a healthy baby, this journey through ten trials and tribulations will eventually come to an end with a clear cry of joy, bringing fulfillment to every person who has waited patiently.