Prediction of Preterm Birth: Cervical Sonography

被引:106
作者
Mella, Maria Teresa [1 ]
Berghella, Vincenzo [1 ]
机构
[1] Thomas Jefferson Univ, Div Maternal Fetal Med, Dept Obstet & Gynecol, Jefferson Med Coll, Philadelphia, PA 19107 USA
关键词
cervical length; prediction; preterm birth; ASYMPTOMATIC PREGNANT-WOMEN; HIGH-RISK; TRANSVAGINAL ULTRASONOGRAPHY; UTERINE CONTRACTIONS; LENGTH MEASUREMENT; ULTRASOUND; DELIVERY; TRANSPERINEAL; PROGESTERONE; MIDTRIMESTER;
D O I
10.1053/j.semperi.2009.06.007
中图分类号
R71 [妇产科学];
学科分类号
100211 [妇产科学];
摘要
The cervix has to open to allow vaginal birth. Ultrasound has now shown that this lower part of the uterus begins to show changes weeks before eventual birth. Only transvaginal ultrasound should be used to evaluate the cervix for prediction of preterm birth (PTB). The shortest best cervical length (CL) is the most effective measurement for clinical use. Proper technique is paramount for accurate results. The risk of PTB increases with ever shorter CL (<25 mm). Other factors that must be carefully considered when using CL for prediction of PTB are number of fetuses, risk factors for PTB, and gestational age at screening. © 2009 Elsevier Inc. All rights reserved.
引用
收藏
页码:317 / 324
页数:8
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