Transvaginal sonography and cervical length changes in normal pregnancy

ABSTRACT

Transvginal sonography [TVS] is the gold standard for investigating cervical Length. The aim of this study was investigation of cervical length changes during normal pregnancy by TVS. This epidemiotogical study was carried out from 22[en] April 2006 to 21[st] April 2007 on 150 pregnant women who had contacted Ahwaz Imam Khomani Hospital. Cervical Length changes in normal pregnancies were studied by TVS in three trimesters. Gestational age of studied population was 8 to 37 weeks. Anova and Chi Square tests were used for statistical analysis. In the 2[nd] trimester the cervical length was at minimum [26mm] and mean cervical length was [40.72 mm]. In the 1[st] trimester cervical length was the maximum of [56 mm] and mean cervical Length was [39.03 mm]. Mean cervical length was the shortest [37.83 mm] in the under 20 years and longest [40 mm] in the over 35 year's age group. Transvaginal Sonography is useful, for cervical length evaluations and management of preterm deliveries and cervical insufficiency