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During a cervical length scan, an ultrasound is used to measure the length of the cervix. The procedure is typically performed transvaginally, as this provides a more accurate measurement compared to an abdominal ultrasound. The ultrasound probe is inserted into the vagina to visualize and measure the length of the cervix.
Cervical length measurement is often used as a predictor of preterm birth risk. A shorter cervix may be associated with an increased risk of preterm labor and delivery.
Cervical length assessment is particularly important in high-risk pregnancies, such as those involving multiple gestations (twins or more) or a history of preterm birth.
Some women may have a condition called cervical insufficiency, where the cervix begins to shorten or open too early in pregnancy, increasing the risk of preterm birth. Cervical length monitoring helps identify this condition.
If a short cervix is detected, healthcare providers may recommend interventions or treatments to help prevent preterm birth. These interventions may include progesterone supplementation or the placement of a cervical cerclage (a stitch to reinforce the cervix).
Cervical length measurement is often performed in the second trimester, typically between 18 and 24 weeks of gestation. This is a critical period for assessing the risk of preterm birth.
If you are pregnant and have concerns about your cervical length or preterm birth risk, it's important to discuss these concerns with your healthcare provider. They can assess your individual situation, perform necessary tests, and provide guidance on appropriate interventions or monitoring based on your medical history and risk factors.