How to assess the exact age of IVF infants
IVF is a kind of baby obtained by culturing fertilized eggs in vitro through assisted reproductive technology. For IVF infants, it is very important for medical and scientific research to assess their exact age. Next, we will introduce how to evaluate the accurate age of IVF from four aspects: pregnancy time, embryonic development, ultrasonic technology and blood detection.
Pregnancy time
For naturally conceived babies, the time of pregnancy is easy to determine, usually from the first day of the last menstrual period. However, for IVF infants, the duration of pregnancy needs to be estimated according to the specific date of conception. Generally speaking, the fertilization date of IVF is the first day after IVF. At the same time, women often receive hormone therapy such as progesterone after IVF embryo transfer, which will have a certain impact on the determination of the pregnancy date. Therefore, when assessing the exact age of IVF infants, the pregnancy time needs to be accurately calculated in combination with factors such as pregnancy date and hormone therapy.
embryonic development
Embryonic development is one of the important indicators to evaluate the accurate age of IVF. During in vitro culture, embryos will go through a series of development stages, including 2-8 cell stage, blastocyst stage, early blastocyst stage, honeycomb blastocyst stage, etc. These different stages of development have clear characteristics and symbolic structures, which can be observed and evaluated under microscope to determine the age of the embryo. At the same time, the development of embryos can also be evaluated by evaluating the cell division rate and embryo quality and other indicators to assess the age.
In addition, with the development of science and technology, it is possible to freeze the embryos before the birth of some test tube babies. In this case, the exact age of the embryo needs to be evaluated according to the morphological and developmental characteristics of the thawed embryo.
Ultrasonic technology
Ultrasonic technology is one of the common methods to evaluate the accurate age of IVF infants. Through ultrasonic examination, doctors can observe the size of the fetus, organ development and placental position, and then calculate the exact age of the fetus. Usually in the fifth to eighth week of pregnancy, the fetal head and buttock length can be measured by ultrasonic examination, and the fetal age can be determined by corresponding to the embryonic development curve.
Blood test
Blood testing is also a commonly used method to assess the exact age of test tube infants. Specifically, by taking blood samples from pregnant women and testing the related biochemical indicators, such as progesterone level and human chorionic gonadotropin (hCG), we can calculate the time of conception and the age of the embryo. Blood testing can be carried out within a few days after embryo transfer, with high accuracy.
To sum up, the accurate age of IVF needs to be comprehensively evaluated in combination with pregnancy time, embryonic development, ultrasonic technology, blood detection and other indicators. These methods have been widely used in clinical practice, providing an important scientific basis for ensuring the normal development and safe birth of IVF.
Summary
Through the determination of pregnancy time, the evaluation of embryonic development, the application of ultrasonic technology and blood detection indicators, we can evaluate the accurate age of test tube babies. These methods can provide scientific and effective means to help doctors and researchers better understand the development of IVF and carry out targeted medical treatment and research. To ensure the health and happiness of IVF.
