How to accurately calculate the expected date of delivery of pregnant women
The due date is the most important date in the mind of pregnant women after pregnancy. However, not everyone knows how to calculate a pregnant woman’s due date. In this article, we will introduce you to four aspects to help you accurately calculate your due date.
1. Basic knowledge of pregnancy calculation
Pregnancy is calculated from the first day of the last menstrual period until the day of delivery. The usual pregnancy period is 280 days (40 weeks). If the period is significantly different from the average period, or is irregular, make appropriate adjustments based on the actual situation. In order to better calculate the pregnancy period, it is best to have a B-ultrasound as early as possible in the pregnancy to more accurately determine the size and date of birth of the fetus.
2. Naegele formula
The Naegele formula is a widely used method for calculating the expected date of delivery. The specific calculation formula is: add 7 days to the first day of the last menstrual period, then subtract 3 months, and finally add 1 year. For example, if the first day of the last menstrual period is November 1st, the expected date of delivery is August 8th.
3. Pregnancy wheel method
The pregnancy cycle method is a new method for calculating the due date. According to the number of rounds of pregnant women, each round is 21 days, and the expected date of delivery is around the 6th round + 2 days. For example: the first day of the last menstrual period is November 1, and the pregnancy is the 6th cycle + 2 days. Therefore, the due date is August 8th.
4. B-ultrasound method
The B-ultrasound method is one of the most accurate methods for calculating the expected date of delivery. The size of the fetus can be measured through B-ultrasound to determine the date of birth. The B-ultrasound method is suitable for early-stage pregnant women and is not applicable for more than 12 weeks of pregnancy.
Summary
The above are several common ways to calculate pregnancy period. Each method has its advantages and disadvantages. You can choose one of them for prediction based on your actual situation. No matter how you calculate it, accurately predict the due date, creating comfort and peace of mind for pregnant women and their families.
