Reference values for the cervical length measurement in the second trimester of pregnancy using the transvaginal ultrasound in a large Brazilian population.
10.5468/ogs.2016.59.4.303
- Author:
Alberto Borges PEIXOTO
1
;
Taciana Mara Rodrigues da CUNHA CALDAS
;
Ana Helena Bittencourt ALAMY
;
Wellington P MARTINS
;
Rafael Frederico BRUNS
;
Edward ARAUJO JÚNIOR
Author Information
1. Mario Palmério University Hospital, University of Uberaba, Uberaba-MG, Brazil.
- Publication Type:Original Article
- Keywords:
Cervix uteri;
Reference values;
Second pregnancy trimester;
Transvaginal ultrasound
- MeSH:
Cervical Length Measurement*;
Cervix Uteri;
Cross-Sectional Studies;
Female;
Gestational Age;
Humans;
Pregnancy;
Pregnancy Trimester, Second*;
Pregnancy*;
Reference Values*;
Retrospective Studies;
Ultrasonography*
- From:Obstetrics & Gynecology Science
2016;59(4):303-306
- CountryRepublic of Korea
- Language:English
-
Abstract:
To establish reference values for the cervical length (CL) measurement by transvaginal ultrasound between 20 and 24+6 weeks of gestation in a large Brazilian population. A retrospective cross-sectional study was performed with 996 singleton pregnancies. The CL measurement (mm) using the transvaginal ultrasound was obtained in a sagittal view and the calipers positioned to measure the linear distance between the triangular area of echodensity at the external os and the internal os. The median±standard deviation and ranges for the CL measurement (mm) was 37.0±10.7 (range, 8 to 51). CL measurement did not modify significantly with gestational age. The observed percentiles for the CL measurement (mm) considering all number case were the following: 5th, 28 mm; 50th, 37 mm; and 95th, 45 mm. Reference values for the CL measurement by transvaginal ultrasound between 20 and 24+6 weeks of gestation in a large heterogeneous Brazilian population were established.
