How to determine the expected date of IVF
IVF refers to the application of assisted reproductive technology in the process of in vitro fertilization and embryo cultivation, which provides opportunities for infertile patients. Once the IVF is successful, the determination of the expected delivery date is crucial for the pregnant person and the medical team. Next, we will introduce how to determine the expected delivery date of IVF in detail from the time of embryo implantation, the time of the last menstrual period of the pregnant woman, ultrasound examination and other aspects.
Time of embryo implantation
The time of embryo implantation is the first important factor to determine the expected date of IVF. IVF embryos are implanted into the uterus of pregnant women after a certain period of time after fertilization. The time of embryo implantation varies slightly according to the cycle of IVF. Generally speaking, embryo implantation is carried out from the third to the sixth day after fertilization. The whole implantation process is usually completed within a few minutes, and does not require hospitalization or surgical anesthesia. The record of embryo implantation time provides an important time node for calculating the expected delivery date.
After embryo implantation, pregnant women will receive progesterone treatment to help embryo implantation succeed. The progesterone treatment usually lasts until 12 weeks after conception, which is also the record after the last menstruation of the pregnant woman, and can provide a reference for the calculation of the expected delivery date.
Last menstrual period of pregnant women
The time of the last menstruation of pregnant women is another important factor in determining the expected date of IVF delivery. The calculation method of test tube baby's due date is based on the first day of the last menstrual period of the pregnant woman. Usually, the doctor will ask the pregnant woman to fill in the record form according to the date of the last menstruation after successful IVF, so as to calculate the subsequent expected date of birth. However, as infertility patients often need to accept assisted reproductive technology, they may have made several cycle adjustments before IVF, so the time of the last menstruation cannot completely determine the expected date of delivery.
Ultrasonic examination
Ultrasonography is one of the reliable methods to determine the due date of IVF. Ultrasonography can measure the size, development and growth of the fetus, so as to calculate the expected date of delivery. About 7 weeks after IVF conception, ultrasound can clearly show the fetal heartbeat and embryo bud, which is an important milestone. According to the results of ultrasound examination, doctors can calculate the expected date of delivery, and carry out corresponding nutrition, weight control and prenatal examination of pregnant women. As for the specific expected date, it needs to be determined in combination with other factors.
Determine the expected date of delivery in combination with other factors
In addition to the time of embryo implantation, the time of the last menstrual period of the pregnant woman and ultrasound examination, other factors should be combined to determine the expected date of delivery of IVF. Doctors usually consider factors such as the age of the pregnant woman, the condition of the disease during pregnancy, and the way of pregnancy to comprehensively judge the final expected date of delivery. The determination of the expected date of birth is very important for doctors and pregnant women, which can help them carry out reasonable management and planning.
To sum up, the expected date of IVF is determined by comprehensively considering the time of embryo implantation, the time of the last menstrual period of the pregnant woman, ultrasound examination and other factors. Each factor has its specific role and significance, but only by combining multiple factors can we get an accurate expected date. For IVF patients and medical teams, calculating the due date correctly can help them better manage the health of pregnant women and the growth of the fetus.
