Normal values of cervical length by gestational week

The normal values of cervical length are also different at different gestational weeks, including early pregnancy, second pregnancy and third pregnancy, as follows: 1. Early pregnancy (14 weeks ago) Generally around 3.8 to 4.8 cm. 2. Second trimester (1428 weeks) Usually between 3 and 4 cm.(After 28 weeks) is about 2.5 to 3 cm. Cervical length is important for assessing pregnancy risk. In the first trimester, the embryo is developing rapidly, and the right cervical length provides a relatively stable environment for the embryo. If the cervix is too short, it may increase the risk of early miscarriage. In the second trimester, the length of the cervix will change as the fetus grows, but it still needs to be maintained within a certain range to maintain the stability of pregnancy. A short cervix may indicate problems such as cervical insufficiency, which may easily lead to mid-term abortion or premature birth. In the third trimester, the fetus gradually matures and is ready for delivery, and the length of the cervix will be further shortened. However, if the shortening is too fast or too short, it may mean an increased risk of premature birth, which requires close monitoring and timely intervention. Regular monitoring of cervical length during pregnancy is important to protect the health of the pregnant woman and the fetus. If abnormal cervical length is found, it should be communicated to the doctor in time to take appropriate measures to reduce the risk of adverse pregnancy outcomes.