Cervical length: There are essentially four methods that can

There are essentially four methods that can be used to evaluate the uterine cervix: digital examination, transabdominal ultrasound, transperineal ultrasound and transvaginal ultrasound. It is the digital examination that provides the most comprehensive evaluation of the cervix, assessing dilatation, position, consistency and length. However, this examination suffers from being subjective. It is limited especially in its ability to establish accurately the cervical length. It also cannot ... Cervix length matters: Learn how this crucial measurement can impact your pregnancy journey and baby's health. Cervical length Transvaginal measurement of cervical length is a reproducible 15 and safe technique. Since the mid 1990s there has been an enormous amount of work on its use as a predictor of preterm delivery. Within a low risk population, delivery before 33 weeks' gestation occurs in approximately 50% of women with a cervical length ≤ 15 mm measured at 23 weeks 16 or during the second trimester. 17 However, a cervical length ≤ 15 mm at 23 weeks occurs in <2% of the population. Thus ... The cervical length is a dynamic measurement that will vary slightly if performed throughout the course of pregnancy. Prior to pregnancy, most women have a cervix that is between 35and 55 mm in length.