{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2024,7,18]],"date-time":"2024-07-18T21:40:03Z","timestamp":1721338803945},"reference-count":20,"publisher":"Federa\u00e7\u00e3o das Associa\u00e7\u00f5es de Ginecologia e Obstetr\u00edcia","issue":"12","license":[{"start":{"date-parts":[[2017,11,27]],"date-time":"2017-11-27T00:00:00Z","timestamp":1511740800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Rev Bras Ginecol Obstet"],"published-print":{"date-parts":[[2017,12]]},"abstract":"<jats:p>Purpose\u2003To 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.<\/jats:p><jats:p>Methods\u2003The 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 t-test was used to compare measuring techniques.<\/jats:p><jats:p>Results\u2003The cervical biometry results did not vary significantly with the gestational age and were best represented by linear regression (R2\u2009=\u20090.0075 with the continuous technique, and R2\u2009=\u20090.0017 with the segmented technique). Up to the 21st 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 (p\u2009&lt;\u20090.001).<\/jats:p><jats:p>Conclusion\u2003Cervical biometry in pregnant women between 18 and 24 weeks was represented by a linear regression, independently of the measuring mode. The ideal measuring technique was the transvaginal ultrasound performed at a gestational age \u226521 weeks.<\/jats:p>","DOI":"10.1055\/s-0037-1608617","type":"journal-article","created":{"date-parts":[[2017,11,27]],"date-time":"2017-11-27T23:49:49Z","timestamp":1511826589000},"page":"647-652","source":"Crossref","is-referenced-by-count":2,"title":["Assessment of Length of Maternal Cervix between 18 and 24 weeks of Gestation in a Low-Risk Brazilian Population"],"prefix":"10.61622","volume":"39","author":[{"given":"Soraya Gomes de Amorim","family":"Andrade","sequence":"additional","affiliation":[{"name":"Department of Obstetrics, Escola Paulista de Medicina, Universidade Federal de S\u00e3o Paulo (EPM-UNIFESP), S\u00e3o Paulo, SP, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Fernando Moreira de","family":"Andrade","sequence":"additional","affiliation":[{"name":"Department of Obstetrics, Escola Paulista de Medicina, Universidade Federal de S\u00e3o Paulo (EPM-UNIFESP), S\u00e3o Paulo, SP, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Edward","family":"Araujo J\u00fanior","sequence":"additional","affiliation":[{"name":"Department of Obstetrics, Escola Paulista de Medicina, Universidade Federal de S\u00e3o Paulo (EPM-UNIFESP), S\u00e3o Paulo, SP, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Cl\u00e1udio Rodrigues","family":"Pires","sequence":"additional","affiliation":[{"name":"Centro de Refer\u00eancia no Ensino do Diagn\u00f3stico por Imagem (CETRUS), S\u00e3o Paulo, SP, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Rosiane","family":"Mattar","sequence":"additional","affiliation":[{"name":"Department of Obstetrics, Escola Paulista de Medicina, Universidade Federal de S\u00e3o Paulo (EPM-UNIFESP), S\u00e3o Paulo, SP, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Antonio Fernandes","family":"Moron","sequence":"additional","affiliation":[{"name":"Department of Obstetrics, Escola Paulista de Medicina, Universidade Federal de S\u00e3o Paulo (EPM-UNIFESP), S\u00e3o Paulo, SP, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"47794","published-online":{"date-parts":[[2017,11,27]]},"reference":[{"issue":"04","key":"ref1","doi-asserted-by":"crossref","first-page":"368","DOI":"10.1002\/uog.2723","article-title":"Sonographic measurement of cervical length and fetal fibronectin testing in threatened preterm labor","volume":"27","author":"E Tsoi","year":"2006","journal-title":"Ultrasound Obstet Gynecol"},{"issue":"01","key":"ref2","doi-asserted-by":"crossref","first-page":"13","DOI":"10.1515\/JPM.2006.002","article-title":"A sonographic short cervix as the only clinical manifestation of intra-amniotic infection","volume":"34","author":"S Hassan","year":"2006","journal-title":"J Perinat 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