Assessment of Length of Maternal Cervix between 18 and 24 weeks of Gestation in a Low-Risk Brazilian Population

To determine cervical biometry in pregnant women between 18 and 24 weeks of gestation and the ideal mode of measurement of cervical length in cases of curved and straight cervical morphology.  The uterine cervices of 752 low-risk pregnant women were assessed using transvaginal ultrasound in a prospe...

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Bibliographic Details
Published in:Revista Brasileira de ginecologia e obstetrícia 2017-12, Vol.39 (12), p.647-652
Main Authors: Andrade, Soraya Gomes de Amorim, Andrade, Fernando Moreira de, Araujo Júnior, Edward, Pires, Cláudio Rodrigues, Mattar, Rosiane, Moron, Antonio Fernandes
Format: Article
Language:English
Subjects:
Adolescent
Adult
biometry
Cervical Length Measurement
Cervix Uteri - anatomy & histology
Cross-Sectional Studies
Female
gestation
Humans
morphology
OBSTETRICS & GYNECOLOGY
Original
Pregnancy
Pregnancy Trimester, Second
Prospective Studies
Risk Factors
transvaginal ultrasound
uterine cervix
Young Adult
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Summary:To determine cervical biometry in pregnant women between 18 and 24 weeks of gestation and the ideal mode of measurement of cervical length in cases of curved and straight cervical morphology.  The uterine cervices of 752 low-risk pregnant women were assessed using transvaginal ultrasound in a prospective cross-sectional study. In women with straight uterine cervices, cervical biometry was performed in a continuous manner. In women with curved uterine cervices, the biometry was performed using both the continuous and segmented techniques (in segments joining the cervical os). Polynomial regression models were created to assess the correlation between the cervical length and gestational age. The paired Student -test was used to compare measuring techniques.  The cervical biometry results did not vary significantly with the gestational age and were best represented by linear regression (R  = 0.0075 with the continuous technique, and R  = 0.0017 with the segmented technique). Up to the 21 week of gestation, there was a predominance of curved uterine cervix morphology (58.9%), whereas the straight morphology predominated after this gestational age (54.2%). There was a significant difference between the continuous and the segmented measuring methods in all the assessed gestational ages (  
ISSN:0100-7203
1806-9339
1806-9339
DOI:10.1055/s-0037-1608617