Calculation steps of test tube baby's due date
In vitro fertilization (IVF) refers to fertilization and culture in the laboratory through in vitro fertilization (IVF) technology, and then transfer the fertilized eggs to the female uterus for pregnancy. It is very important for doctors and patients to calculate the expected delivery date of IVF, which helps to determine the progress of pregnancy and the planned delivery date. The following are the steps for calculating the expected birth date of test tube babies:
1. Determine the date of fertilized egg transfer
The estimated date of IVF babies is calculated from the date of fertilized egg transfer. During IVF, doctors will determine the best date of fertilized egg transfer according to the menstrual cycle and ovarian stimulation of women. Usually, the fertilized egg will be transplanted into the female uterus within 2-6 days after fertilization.
The date of fertilized egg transfer is the first step in calculating the expected delivery date. It serves as the starting point of pregnancy and helps doctors and patients understand the current gestational week of pregnant women.
2. Calculate the pregnant woman's gestational week
Once the fertilized eggs are transferred, the pregnant woman's gestational week can be counted. The calculation of pregnancy week is based on the last menstrual period (LMP), that is, the first day of the last menstrual period for women. Generally, the pregnancy week is calculated from the first day of the last menstrual period to the date of fertilized egg transfer, plus 14 days.
In the calculation of pregnancy week, the doctor will consider the change of the length of the menstrual cycle and the ovulation day of the woman. These factors can be accurately measured and determined through menstruation records and ultrasonic examination of women.
3. Use the pregnancy calculator to calculate the expected date of delivery
The pregnancy calculator is a convenient and accurate tool for calculating the expected date of delivery. It can accurately calculate the expected date of delivery according to the last menstrual date of the pregnant woman or the date of fertilized egg transfer.
When using the pregnancy calculator to calculate the expected date of delivery, you can also learn about the current gestational week, fetal development and pregnancy progress of the pregnant woman.
4. Check and correct the expected production date
The calculation of the expected delivery date is based on the development of the pregnant woman's fetus and the progress of pregnancy in general, so there will be some individual differences in the actual situation. In order to determine the expected date of delivery more accurately, doctors usually check and correct it according to the specific conditions of pregnant women.
The revised due date of a pregnant woman will take into account such factors as the size of the fetus, the personal situation of the pregnant woman and the development of the fetus. The doctor will evaluate the pregnancy progress of pregnant women through regular ultrasonic examination and physical examination, and timely revise the expected date of delivery, so as to make the best delivery plan for pregnant women.
Summary
The calculation steps of IVF baby's due date mainly include determining the date of fertilized egg transfer, calculating the pregnant week of pregnant women, using the pregnancy calculator to calculate the due date and checking and correcting the due date. These steps not only help doctors and patients to understand the pregnancy progress and fetal development of pregnant women, but also provide a basis for making delivery plans.
In the application of IVF technology, the calculation of expected delivery date is very important for doctors and patients. It can help prepare for delivery in advance and ensure the safety of pregnant women and fetuses. Therefore, in the process of IVF, accurate calculation of the expected date of birth is an essential step.
