How to calculate the expected date of IVF
IVF is a kind of assisted reproductive technology. The calculation of its due date is different from that of natural pregnancy, and it needs to be carried out according to the calculation method of embryo transfer date and pregnancy week. How to calculate the expected delivery date of IVF will be described in detail below.
1. Date of embryo transfer
The date of embryo transfer is the first step to calculate the expected delivery date of IVF. It usually transfers the fertilized eggs back to the uterus on the 3-6th day after artificial fertilization or in vitro fertilization. When performing IVF operation in the hospital, the doctor will record the transplant date.
According to the date of embryo transfer, it is generally regarded as the starting point of pregnancy age. Since the date of embryo transfer is related to the specific treatment plan and personal conditions, it is generally necessary to determine the exact date of embryo transfer in combination with the doctor's suggestions.
2. Calculation method of gestational age
There are two methods to calculate the gestational week of IVF: according to the date of embryo transfer and embryo development, and according to the size of the gestational sac and the fetal body length.
The first method is to calculate the gestational week according to the date of embryo transfer and embryo development. Generally speaking, from the date of embryo transfer, the date of embryo transfer is regarded as 0+0 of the gestational week, and 1 is added every day after that. According to the development of embryos, the first blood HCG test is generally carried out 10-14 days after transplantation, and pregnancy is determined according to the blood HCG level.
The second method is to calculate the gestational week according to the size of the gestational sac and the fetal body length. Through ultrasonic examination, doctors can measure the size of the gestational sac and the length of the fetus, and determine the gestational week according to the reference table. This method usually carries out the first ultrasonic examination 5-6 weeks after embryo transfer.
Generally, the pregnancy week calculation method will combine two methods to ensure the accuracy of the calculation.
3. Pregnancy week calculation tool
To calculate the expected birth date of test tube babies, some pregnancy week calculation tools can be used, such as pregnancy week calculator or pregnant women. These tools can quickly and accurately calculate the expected date of delivery of IVF according to the calculation method of transplant date and gestational week.
The pregnancy week calculator usually provides a simple and easy to use interface. Users can get the expected date of birth and pregnancy week by entering the date of embryo transfer. Pregnant women are more comprehensive. In addition to the calculation function of pregnancy week, it also includes other practical functions, such as recording changes in pregnancy, providing nutrition and health advice, etc.
4. Hospital obstetrics and gynecology monitoring
The calculation of the expected date of delivery of test tube babies is a complicated process, which needs to be combined with the guidance of doctors and the monitoring of hospital gynecology and obstetrics. During the whole pregnancy period of test tube babies, the hospital's gynecology and obstetrics department will regularly carry out prenatal examinations, including routine blood tests, routine urine tests, ultrasound tests, etc., to monitor the development of the fetus and the health of the mother.
The monitoring of hospital obstetrics and gynecology can help to determine the accurate due date of IVF, detect and deal with abnormalities in time, and provide comprehensive medical security for mothers and infants. During the whole pregnancy, pregnant women should carry out prenatal examination in strict accordance with the doctor's recommendations to ensure the safe development of embryos and the health of the mother.
summary
The calculation of the expected date of delivery of IVF is a process combining the date of embryo transfer, the calculation method of pregnancy week, the calculation tool of pregnancy week and the monitoring of hospital gynecology and obstetrics. By correctly calculating the expected date of birth, we can provide important reference for the development of IVF and the health of mothers and infants. I hope this article can help you understand how to calculate the expected delivery date of test tube babies.
