According to the statistics of the Medical Association, the success rate of IVF in the mainland is about 50%-60%. In order to improve the success rate, some patients will ask for 2 to 3 embryos implanted at a time. However, twins and triplets are at great risk, prone to gestational syndromes such as diabetes and hypertension, and the probability of postpartum bleeding is also high. If all the embryos implanted happen to survive or if the mother is not suitable for a multiple pregnancy, shedding surgery is required. So, how many embryos are appropriate for IVF transfer?
Factors affecting the number of embryo transfers
The number of embryos transferred is determined by the woman's fertility conditions, including the shape of the uterus, the thickness of the endometrium, whether there are fibroids in the uterus, hormone levels, and whether the body has other diseases.
Uterine morphology: Because the condition is different, the effect of this symptom on the baby is also different. If the patient has a congenital uterine malformation, and the condition is more severe, it may cause the fetus to stop developing or miscarriage. Of course, according to the type and degree of uterine deformity of the patient, it is necessary to determine whether the baby can be conceived, and the effective method is to choose a healthy blastocyst for timely transplantation.
Endometrium: The endometrium is generally required to be within the range of 8mm to 12mm, and exceeding or below this value will affect the implantation of the embryo. If a woman's uterine lining is too thin, blood flow and nutrient deficiencies will cause infertility.
Uterine fibroids: Uterine fibroids are a common tumor in women. The main cause of infertility is that the fibroids occupy the site where the fertilized egg implants, resulting in the inability of the embryo to implant, and even if the pregnancy is successful, it will be aborted due to the impact on the development of the embryo.
Hormone levels: The smooth implantation, pregnancy, growth and development of the fetus in the woman's uterus are of course indispensable to the support of endocrine balance and hormone levels. Due to external environmental factors, physiological factors and nutritional factors, etc., it will lead to the decline of female ovarian function, which is disrupted by the hypothalamic-pituitary-ovarian axis, resulting in miscarriage.
Other diseases: If a woman suffers from other reproductive diseases, such as severe cervicitis, vaginitis, endometriosis, etc. can not be treated in time, it will lead to infertility.
How many embryos does IVF implant at a time?
Tips: If there is no special need, it is generally recommended that patients transfer one embryo at a time. Twins and triplets are at great risk, prone to gestational syndromes such as diabetes and hypertension, and the probability of postpartum bleeding is also high. We should "avoid artificially causing multiple pregnancies and eliminate fetal reduction surgery."