The due date is not the exact time of delivery, but it is an approximate range that can remind pregnant mothers of the growth and development of the fetus, as well as the approximate range of the fetus's birth time. Relatively speaking, the due date is still very important. Relevant data show that there are relatively few pregnant women who give birth on the due date, with a probability of about 5%. Many pregnant women are born between 37 and 42 weeks of pregnancy. In other words, pregnant women need to be more careful at 37 weeks of pregnancy and make preparations for the birth of the fetus. So how is the due date calculated? This is something that pregnant mothers themselves need to understand. First; Calculate based on the expected date of pregnancy Ten months of pregnancy means 40 weeks and 280 days, so it is not the 10 months and 300 days we often say. If the menstrual cycle is 28 days, the calculation method of delivery date is that the first day of the expected delivery date is the first day of pregnancy, and the delivery date = the first day of the expected delivery date, and 280 days is the corresponding life. For example, the calculation of the due date for pregnant women with a 30-day menstrual cycle is as follows: on the first day of the due date of pregnancy, add 7 months, add 9 or subtract 3 due dates. For example, Xiao Cheng's due date of pregnancy is January 1, 2018, so the due date is 1 9=10, 1 7=8, and the due date is October 8, 2018; if the due date of pregnancy is November 30, 2017, the due date is 11-3=8, 30 7=37, and the due date is September 7, 2018; if the menstrual cycle is 35 days, according to the above calculation, the due date will be pushed back by one week; if the due date is 21 days, according to the above calculation, the due date will be moved forward by one week; Second: Other methods of estimating the expected date of delivery For pregnant women with irregular menstrual cycles or who cannot remember their menstrual dates clearly, the following method can be used to calculate the expected date of delivery. The expected date of delivery is calculated by blood pressure B-ultrasound examination; blood pressure is calculated based on the date of fetal movement; supplementation is calculated from the time of morning sickness; weight is calculated based on the height of the fundus of the uterus. Generally speaking, B-ultrasound calculations are relatively accurate, but the subsequent blood supplementation weight is not very accurate. For pregnant mothers who need to prepare for pregnancy, they can start to record their menstrual life appropriately, so that they can grasp their due date. Although the due date is not accurate, it is relatively one of the important links that pregnant mothers can distinguish. When is the due date for pregnancy in June? If you are pregnant in June, you need to see when your last menstrual period was. If you get pregnant in early June, the due date should be May and the delivery date should be February. If you get pregnant at the end of June, the due date is likely to be June, so the delivery date is probably in March. The calculation of the due date is the month of the expected date of delivery plus 9, which is the month of the due date. Giving birth 2 weeks before the due date and 2 weeks after the due date are clinically normal. If the last menstrual period is not recorded, it is best to calculate the expected date of delivery based on the results of the first B-ultrasound examination. The delivery date is an estimated time, and pregnant mothers should make preparations in advance. Generally, it is recommended that pregnant mothers make corresponding preparations for hospitalization and related items before 37 weeks of pregnancy, so that they can be hospitalized for delivery at any time. In the late pregnancy, pregnant mothers should also pay more attention to the changes in their body, and tell their family members immediately if they feel any discomfort. |
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