Is ultrasound accurate in predicting the date of delivery?

Ten months of pregnancy is just a rough range. The specific time of delivery has a direct relationship with the condition of the pregnant woman, because when the pregnant woman is close to delivery, her physical condition begins to become unstable and accidents are prone to occur. Therefore, many family members hope to check the expected date of delivery through B-ultrasound. So, is the ultrasound prediction of delivery date accurate? Let’s take a look at the relevant introduction below.

Due Date

As the name suggests, the due date is the expected date of delivery. The age of the fetus in the uterus is calculated in weeks. The maturity of the fetus can be determined based on the gestational age. The due date is not the exact date of delivery. Scientists have calculated that only about 53% of women give birth on their due date. Is it abnormal to deliver "early" or "delayed"? Clinically, a full-term fetus refers to a gestational age between 37 and 42 weeks. About 80%-90% of pregnant women give birth during this period. Babies born before 37 weeks are considered premature, accounting for about 5% to 10%.

Is ultrasound accurate in calculating the expected date of delivery?

Accuracy: 98%

To calculate the expected date of delivery, doctors usually add 40 weeks to the day of the last menstrual period. There is a small problem with this method, which is that most women usually realize they are pregnant after a month or more, but by then it is difficult for them to tell the exact day of their last menstrual period, so they give an approximate date. In addition, some women's menstrual cycles are not very accurate, so it is difficult to calculate the exact due date.

The above is an introduction to whether ultrasound is accurate in predicting the date of delivery. I think everyone should have a clearer idea of ​​it. The accuracy of B-ultrasound's predicted delivery date is still quite high. In the middle and late stages of pregnancy, regular B-ultrasound examinations should be performed to comprehensively monitor the condition of the fetus. If conditions permit, it is best to go to the hospital to wait for delivery, which can greatly reduce the chance of unexpected situations.