How long is the length of the cervix in the second trimester?

The normal range of cervical length in the second trimester is usually 2.5 cm to 4 cm.

Cervical length is an important indicator during pregnancy. With the increase of gestational age, cervical length will change to some extent, but it should generally remain within 2.5 cm to 4 cm. If cervical length is too short, it may indicate the risk of premature birth. When

cervical length is shorter than 2.5 cm, it needs to be taken seriously. The doctor may further evaluate the condition of the pregnant woman, such as whether there are uterine contractions, previous history of premature birth, etc., to comprehensively determine the risk of premature birth, and formulate the corresponding treatment and follow-up plan.

Ultrasound is a common method to monitor cervical length. Through regular ultrasound examination, changes in cervical length can be detected in time to provide evidence for clinical decision-making. In

short, paying attention to cervical length in the second trimester is important to protect the health of the mother and child. If the pregnant woman has any questions or concerns about cervical length, she should communicate with her doctor in time for professional advice and guidance.