Reference values for the cervical length measurement in the second
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Reference values for the cervical length measurement in the second
http://dx.doi.org/10.5468/ogs.2016.59.4.303. pISSN 2287-8572 · eISSN ... to have a CL assesses by transvaginal ultrasound â¤15 mm between 20 and 25 weeks.
Short Communication Obstet Gynecol Sci 2016;59(4):303-306 http://dx.doi.org/10.5468/ogs.2016.59.4.303 pISSN 2287-8572 · eISSN 2287-8580
Reference values for the cervical length measurement in the second trimester of pregnancy using the transvaginal ultrasound in a large Brazilian population Alberto Borges Peixoto1,2, Taciana Mara Rodrigues da Cunha Caldas1,2, Ana Helena Bittencourt Alamy1, Wellington P. Martins3, Rafael Frederico Bruns4, Edward Araujo Júnior5 1
Mario Palmério University Hospital, University of Uberaba, Uberaba-MG; 2Radiologic Clinic of Uberaba, Uberaba-MG; 3Department of Obstetrics and Gynecology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto-SP; 4Department of Obstetrics and Gynecology, Federal University of Paraná, Curitiba-PR; 5Department of Obstetrics, Paulista School of Medicine, Federal University of São Paulo, São Paulo-SP, Brazil
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. Keywords: Cervix uteri; Reference values; Second pregnancy trimester; Transvaginal ultrasound
