Why does the HCG of IVF grow slowly?
Test tube baby is a kind of reproductive technology that develops a fertilized egg in a test tube and then implants it into the mother's uterus. HCG (human chorionic gonadotropin) is an important indicator of early pregnancy in women. It is often used to detect the implantation of fertilized eggs and whether the pregnancy develops normally. However, sometimes we will find that the HCG of IVF increases slowly, which may be caused by the following aspects.
Quality problems of fertilized eggs
The quality of fertilized eggs is one of the important factors affecting the growth rate of HCG in IVF. Sometimes, the quality of the fertilized egg is not ideal, which may be due to the quality problem of the egg itself or the abnormality in the process of sperm and egg combination, which will lead to difficult implantation and slow development of the fertilized egg. In addition, the number of fertilized eggs implanted will also affect the growth rate of HCG. If only one fertilized egg is implanted, the growth rate of HCG may be relatively slow.
In the process of IVF, the hospital will improve the success rate by evaluating and screening the quality of fertilized eggs. Some advanced hospitals, such as the Reproductive Center of Peking Union Medical College Hospital, use the embryo monitoring system to observe the development process of the fertilized eggs in real time, which can better screen the fertilized eggs with good quality, thus improving the implantation and HCG growth rate.
Bad intrauterine environment
The intrauterine environment is the key to the consolidation and development of the fertilized egg. If there are abnormalities in the uterine environment, such as thin endometrium, hysteromyoma, etc., it will affect the implantation of fertilized eggs and the growth of HCG. In addition, the intrauterine environment is also regulated by hormone levels. For example, changes in progesterone and estrogen will affect the intrauterine environment.
Some hospitals will prepare endometrium in the process of IVF, regulate the status of endometrium by using progesterone and other drugs, and promote the implantation of fertilized eggs and the normal growth of HCG. For example, in the Reproduction and Genetics Center of Ruijin Hospital affiliated to Shanghai Jiaotong University School of Medicine, experts will develop personalized endometrial preparation programs according to the patient's conditions, so as to improve the implantation effect of fertilized eggs.
Embryos carrying chromosomal abnormalities
The abnormal chromosome carried by IVF embryos is also one of the common reasons for the slow growth of HCG. During the early development of the embryo, if it carries chromosome abnormalities, chromosome replication and cell division will be affected, resulting in slow development of the fertilized egg. This is why embryonic chromosome screening is often performed in IVF.
Chromosome screening can help doctors select embryos with normal chromosomes for implantation, improving the success rate of implantation and the growth rate of HCG. For example, the Reproductive Medicine Center of Guangzhou Women and Children's Medical Center has advanced embryo chromosome screening technology and equipment, which can help patients improve their success rate.
summary
The slow growth of HCG in IVF may be caused by a variety of factors, such as quality problems of fertilized eggs, poor intrauterine environment, abnormal chromosome carrying of embryos, etc. The success rate of IVF and the growth rate of HCG can be effectively improved by adopting scientific evaluation and screening methods in the hospital, adjusting the intrauterine environment, carrying out embryo chromosome screening and other measures.
