How to calculate the gestational age of test tube babies
IVF refers to the babies who are pregnant through artificial assisted reproductive technology (ART). For parents of IVF babies, it is very important to know the calculation method of pregnancy week, which can help them better understand the development of the fetus. The following will introduce the method to calculate the pregnancy weeks of IVF babies from the last menstruation.
The first day of the last menstrual period
The first day of the last menstrual period is the starting point for calculating the gestational week, that is, "gestational week 0". Generally speaking, the first day of a woman's menstruation every month is regarded as the first day of her last menstruation. For example, if a woman's last menstruation began on January 1, her pregnancy week will start on January 1. By recording the first day of the last menstrual period, doctors and parents can help determine the expected date of birth of the fetus.
At the same time, the first day of the last menstruation is also a key time point for evaluating embryonic development. By calculating the date of embryo transfer and the gestational week, doctors can better understand the development of the fetus and take necessary intervention measures.
Embryo transfer date
The embryo transfer date is an important reference point for the calculation of IVF pregnancy weeks. According to the date of embryo transfer, the specific number of gestational weeks can be calculated. Usually, 14 days after embryo transfer, a blood or urine test is performed to confirm the successful pregnancy. If the result is positive, the pregnancy is successful, and the pregnancy week can be calculated from this time point.
It is worth mentioning that the date of embryo transfer can be adjusted according to the specific situation of the patient and the doctor's suggestions. Therefore, when calculating the gestational week, it is necessary to ensure that the date of embryo transfer is accurately recorded and the doctor is consulted for further confirmation.
Ultrasonic inspection
Ultrasonic examination is a common method to determine the gestational age of test tube babies. Through ultrasonic examination, doctors can observe the growth and development of the fetus, and determine the gestational week according to the size, organ shape and other indicators of the fetus.
The first ultrasound examination is usually performed between 6 and 10 weeks of pregnancy. At the 6th week after embryo transfer, the heartbeat of the embryo can be seen through ultrasonic examination, and the doctor can start to calculate the gestational week.
With the increase of gestational age, doctors will regularly conduct ultrasonic examination to monitor the development of the fetus and determine the gestational age more accurately. Ultrasonic examination is a safe and non-invasive examination method, which can provide accurate pregnancy week data, and is very important for the management of test tube babies.
Summary
The gestational week of test tube babies can be calculated by determining the first day of the last menstrual period as the starting point, and combining the date of embryo transfer and ultrasonic examination. The first day of the last menstrual period is the starting point for calculating the gestational week, which can help determine the expected date of delivery of the fetus. The date of embryo transfer is an important reference point for calculating the pregnancy week, which can be calculated after confirmation of pregnancy. Ultrasonic examination is a common method to determine the gestational age by observing the development of the fetus. In conclusion, it is very important to know how to calculate the gestational age of IVF, which can help parents better understand the development of the fetus and provide necessary reference for the healthy growth of the fetus.
