Can IVF baby's due date be advanced?
IVF is a method of assisted reproductive technology, which usually means that the fertilized egg is cultivated to the blastocyst stage through in vitro fertilization (IVF) or embryo transfer (ET), and then the blastocyst is implanted into the mother's uterus for development. So, can the expected date of IVF be advanced? The following will be explained from four aspects: physiology, technology, pregnancy week calculation and individual differences.
1. Physiological factors
In general, there is no possibility of early delivery of IVF. Because the fertilized eggs are implanted into the uterus after a period of in vitro culture, compared with the process of natural pregnancy, the embryonic development time during IVF is more controllable and will not be earlier than the normal pregnancy week after fertilization. Therefore, once the IVF is successfully inserted into the mother's uterus, its expected date of birth is usually consistent with the date of fertilization.
In addition, the implantation time of IVF embryos is different from that of natural pregnancy. Because the blastocysts of test tube babies are implanted into the uterus after being cultured in vitro for a period of time, the rate of embryo development varies from individual to individual. Therefore, even if the implantation date is the same, the embryonic development of different IVF is not necessarily the same, which is one of the reasons why the expected date of IVF is different from that of natural pregnancy.
In general, from the perspective of physiological factors, the expected date of IVF babies is generally not advanced.
2. Technical factors
Whether the expected date of IVF can be advanced is related to the selection and operation of assisted reproductive technology. In some special cases, doctors may take some technical measures to adjust the development process of IVF.
For example, in the IVF process, doctors sometimes use the extended culture technology to extend the time of embryo cultivation in vitro, so that it can be implanted after its development is more perfect. In this way, the implanted embryos are more likely to be successfully implanted and improve the pregnancy rate of IVF. However, this is not a method to advance the expected delivery date, but a means to optimize the embryonic development of IVF.
In conclusion, from the perspective of technical factors, the expected date of IVF is not advanced by technical means.
3. Calculation of gestational age
The expected delivery date of IVF is calculated by gestational week, which is similar to the calculation method of gestational week of natural pregnancy. Generally, the calculation of pregnancy week is based on the first day of the last menstruation, plus 40 weeks, we can get the expected date of delivery.
However, for IVF, the calculation of gestational week may be adjusted due to different embryo implantation dates. Doctors usually adjust the calculation of pregnancy week according to the date of embryo implantation. However, this adjustment is only for individual conditions, and will not lead to the advance of the overall expected date.
Therefore, from the perspective of pregnancy week calculation, the expected date of IVF babies is generally not advanced.
4. Individual differences
Everyone's physical condition and physiological characteristics are different, and IVF is no exception. Individual differences may lead to different calculations of gestational weeks, thus affecting the determination of the expected date of delivery. However, this individual difference does not mean that the expected date of IVF can be advanced.
The expected date of IVF is usually determined by professional doctors according to a variety of factors, including embryonic development, implantation date, maternal physical condition, etc. Doctors will carefully evaluate and predict these factors to determine the most reasonable expected date of delivery. Therefore, individual differences do not advance the expected date of IVF.
Summary
To sum up, the expected date of IVF cannot be advanced generally. Physiology, technology, pregnancy week calculation, individual differences and other factors all indicate that the expected date of IVF is usually similar to the situation of natural pregnancy, related to the implantation date, and there is no possibility of advance.
Therefore, it is very important for couples who hope to obtain offspring through IVF technology to understand the development process of IVF and the determination method of the expected date of birth, which can help them better plan and prepare for the arrival of new life.
