Due date, that's for pregnant women"Expected"The date of delivery is often based on the last menstrual period, the date of fetal movement, ultrasound, etc"Estimates"out. This"Expected"The date is crucial for both the pregnant woman and the doctor, as it indicates the likely time of delivery and allows the doctor to prepare accordingly. So,"Expected"How is the date calculated?Let's uncover this"Mysterious mystery"。
1. Calculated based on the last menstrual period.
For regular menstruation, we usually use the date of the last menstrual period"Estimates"Due. The calculation method is to add 9 or subtract 3 from the month of the last menstrual period, and add 7 to the number of days. For example, if your last menstrual period is January 1, 2022, the due date is calculated to be October 8, 2022. However, if your menstrual cycle is irregular or you can't remember the date of your last menstrual period, this method is not very accurate.
2. Calculated according to the date of fetal movement.
In general, the expected date of delivery can be obtained by adding 20 weeks to the date of fetal movement for primiparous women (4 weeks for one month) and 22 weeks (5 weeks for one month) for multiparous women. This method is more suitable for pregnant women with irregular menstrual cycles.
3. Calculated according to ultrasonography.
Ultrasonography is one of the more accurate"Estimates"The method of the due date. Ultrasonography performed in the first and second trimesters of pregnancy can accurately measure the size and development of the fetus and determine the expected date of delivery. This method is usually combined with data such as the last menstrual period and the date of fetal movements.
4. Calculated based on other factors.
In addition to the above three methods, there are some other factors that can be used to assist in calculating the due date. For example, factors such as a pregnant woman's age, weight, height, parity, etc., may also have an impact on the calculation of the due date. These factors can be considered in conjunction with the above methods to arrive at a more accurate due date.
In general,"Expected"Although the date may be biased, it is an important reference for pregnant women and doctors. For pregnant women, this"Expected"The date both reminds them to pay attention to their physical condition and provides them with a basis for communication with their doctors. For doctors, this"Expected"helps them to be medically prepared and can provide correct medical advice if the actual date of delivery deviates from the expected date.
I would like to remind all pregnant women that the due date is just one"Expected", the actual time of delivery may vary. Therefore, when approaching the due date, you must make adequate preparations, pay attention to your physical condition at any time, and seek medical attention in time if there is any abnormality. At the same time, it is necessary to maintain a good attitude and mood, and avoid excessive tension and anxiety, so as to facilitate the health and smooth delivery of the fetus.