Cervical length and gestational age

The normal values of cervical length and gestational age will change with the change of pregnancy cycle, and need to be analyzed in combination with specific conditions. Cervical length is similar to or slightly longer than that of non-pregnancy. This is because the uterus is still small at this time, and the impact on the cervix is small. Generally, it is 2.5 cm to 3 cm. The second trimester is generally maintained at 3 cm to 4 cm. During this stage, the fetus develops gradually and the uterus gradually enlarges, but the cervix still maintains a certain length and stability to protect the fetus in the uterus. In the third trimester, as labor approaches, the cervix begins to undergo a series of changes, including softening and shortening, in preparation for labor. However, if the cervix is significantly shortened too early in the third trimester of pregnancy, it may indicate that there is a risk of premature birth. It is important to note that there is a certain error in the measurement of cervical length, and individual differences are large. If there are doubts or concerns about cervical length, consult a doctor promptly, and the doctor will make a comprehensive assessment and diagnosis according to the specific situation and take appropriate measures. In addition, regular prenatal check-ups are very important for monitoring cervical length and understanding the health status of the fetus and pregnant women.