How to determine the expected date of IVF
IVF is obtained through in vitro fertilization (IVF) technology, and the determination of the expected date of birth is different from that of natural pregnancy. It is very important for pregnant women and doctors to accurately determine the expected delivery date of IVF, because it helps to determine the growth and development of the fetus. The following will elaborate on how to determine the expected delivery date of IVF from four aspects: embryonic development, fetal size, B-ultrasound monitoring and the actual situation of pregnant women.
embryonic development
Embryonic development is one of the key factors in determining the expected delivery date of IVF. The number of pregnant weeks can be calculated from the development of embryos. Generally speaking, the success rate of IVF embryos gradually increases with the development of the embryo. When the embryo is implanted in the uterus, it will begin to develop. The gestational age of pregnant women can be inferred by regular monitoring of embryonic development. Doctors usually initially determine the expected delivery date of IVF according to the development of embryos and the menstrual cycle and insemination time of pregnant women.
However, although embryonic development can give an approximate expected date, the specific expected date needs to be determined by considering other factors.
Fetal size
The size of the fetus is also an important indicator to determine the expected delivery date of IVF. Through ultrasonic examination, doctors can measure the fetal head circumference, abdominal circumference, femur length and other indicators, so as to calculate the fetal age and expected date of birth. Generally, the size of the fetus is consistent with the pregnant woman's gestational week.
Doctors usually conduct the first ultrasonic examination in the early pregnancy. By measuring the size of the fetus, combining the embryonic development and the menstrual cycle of the pregnant woman, the expected date of IVF is initially determined. With the advancement of pregnancy, doctors will also conduct regular ultrasonic examination to determine the growth and development of the fetus and further adjust the expected date of delivery.
B-ultrasonic monitoring
B-ultrasound monitoring is another important means to determine the expected delivery date of test tube babies. Through regular B-ultrasound monitoring, doctors can observe the development of the fetus, including the organ development and placental function of the fetus. B-ultrasound monitoring can also detect the fetal blood flow and amniotic fluid volume of pregnant women and other important parameters.
Through B-ultrasound monitoring, doctors can track the development of the fetus and adjust the expected date of delivery according to the actual situation of the fetus. If B-ultrasound monitoring finds that the fetus has delayed development or other abnormalities, the doctor may advance or postpone the expected date of birth to ensure the health of the fetus.
Actual situation of pregnant women
The actual situation of pregnant women will also affect the determination of the expected delivery date of IVF. The doctor can preliminarily judge the pregnant woman's gestational week through the pregnant woman's physical changes and reactions. For example, the time and frequency when pregnant women began to feel fetal movement, breast changes and emotional changes can be used as reference indicators.
In addition, the doctor will further determine the expected delivery date of IVF by combining the menstrual cycle, insemination time, blastocyst transfer time and other factors of the pregnant woman. The doctor will comprehensively consider the above factors and finally give an accurate expected date of delivery for subsequent prenatal inspection and management.
To sum up, the determination of the test tube baby's due date is based on the comprehensive consideration of embryonic development, fetal size, B-ultrasound monitoring and the actual situation of pregnant women and other factors. These factors are interrelated and together determine the expected date of IVF delivery. It is of great significance for pregnant women's psychology and doctors' prenatal management to accurately determine the expected date of IVF.
