Is the Estimated Pregnancy Time from an Ultrasound Examination Accurate?
B-ultrasound examination can accurately detect the size of the gestational sac and estimate the number of days of pregnancy based on it, with high accuracy. However, there may be errors, generally not exceeding seven days. To reduce errors, repeated measurements can be performed, and the pregnancy time can be determined based on the average value. It is recommended to undergo regular pregnancy check-ups at the hospital during pregnancy and to take adequate rest.
1. B-ultrasound examination for pregnancy time is generally accurate. In early pregnancy, B-ultrasound relies on measuring the size of the gestational sac and embryonic bud to estimate the pregnancy time. After measuring the values, the software built into the B-ultrasound machine will substitute the values into a formula for calculation and automatically provide the estimated pregnancy time. This formula is derived from extensive research and is relatively accurate, with errors generally not exceeding 3-5 days.
2. In the middle and late stages of pregnancy, due to differences in the pregnant woman's height, weight, diet, and nutrition, there may be differences in the fetus's individual characteristics. Therefore, the pregnancy time estimated by B-ultrasound may have errors, but these errors generally do not exceed 10 days.
3. To reduce errors during B-ultrasound examinations, multiple measurements should be performed at different locations to obtain multiple data points. Taking the average of these data points will provide a more accurate estimation of the pregnancy time.
1. Focus on rest, supplementation of nutrients, and appropriate physical exercises such as yoga during pregnancy to promote the development of the baby.
2. Pregnancy is a sensitive period, so it is important to keep warm and avoid staying in air-conditioned rooms for too long in summer.
3. Consume more fresh fruits and vegetables during pregnancy and avoid excessive consumption of cold and acidic foods that may irritate the stomach and intestines.
