{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,1]],"date-time":"2026-06-01T13:28:26Z","timestamp":1780320506815,"version":"3.54.1"},"reference-count":28,"publisher":"Wiley","issue":"11","license":[{"start":{"date-parts":[[2017,5,22]],"date-time":"2017-05-22T00:00:00Z","timestamp":1495411200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["obgyn.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["BJOG"],"published-print":{"date-parts":[[2017,10]]},"abstract":"<jats:sec><jats:title>Objective<\/jats:title><jats:p>To investigate the association between mid\u2010trimester residual cervical length (<jats:styled-content style=\"fixed-case\">CL<\/jats:styled-content>) and the risk of preterm birth in pregnancies after abdominal radical trachelectomy (<jats:styled-content style=\"fixed-case\">RT<\/jats:styled-content>).<\/jats:p><\/jats:sec><jats:sec><jats:title>Design<\/jats:title><jats:p>Retrospective cohort study.<\/jats:p><\/jats:sec><jats:sec><jats:title>Setting<\/jats:title><jats:p>University hospital.<\/jats:p><\/jats:sec><jats:sec><jats:title>Population<\/jats:title><jats:p>A total of 33 deliveries after 22\u00a0weeks\u2019 gestation in 30 women who underwent abdominal <jats:styled-content style=\"fixed-case\">RT<\/jats:styled-content> including prophylactic cervical cerclage and perinatal care between January 2002 and May 2016.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>The association between mid\u2010trimester residual <jats:styled-content style=\"fixed-case\">CL<\/jats:styled-content> (the distance between the cerclage and the external cervical os) and gestational age at delivery was investigated. Receiver\u2013operating characteristics (<jats:styled-content style=\"fixed-case\">ROC<\/jats:styled-content>) curve analysis was performed to estimate the optimal cut\u2010off values of the mid\u2010trimester residual <jats:styled-content style=\"fixed-case\">CL<\/jats:styled-content> for the prediction of preterm birth.<\/jats:p><\/jats:sec><jats:sec><jats:title>Main outcome measures<\/jats:title><jats:p>Preterm birth before 34\u00a0weeks\u2019 gestation.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Mid\u2010trimester residual <jats:styled-content style=\"fixed-case\">CL<\/jats:styled-content> showed a significant correlation with gestational age at delivery (<jats:italic>r<\/jats:italic>\u00a0=\u00a00.36, <jats:italic>P\u00a0<\/jats:italic>&lt;\u00a00.05). There was a significant difference in residual <jats:styled-content style=\"fixed-case\">CL<\/jats:styled-content> between women who did and those who did not give birth before 34\u00a0weeks (<jats:italic>P<\/jats:italic>\u00a0&lt;\u00a00.05). Mid\u2010trimester residual <jats:styled-content style=\"fixed-case\">CL<\/jats:styled-content>\u00a0&lt;\u00a013\u00a0mm was a good predictor of birth before 34\u00a0weeks, with a sensitivity of 67%, specificity of 75%, positive predictive value of 55% and negative predictive value of 86% (area under <jats:styled-content style=\"fixed-case\">ROC<\/jats:styled-content> curve, 0.75).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Mid\u2010trimester residual <jats:styled-content style=\"fixed-case\">CL<\/jats:styled-content> is significantly correlated with gestational age at delivery. Residual <jats:styled-content style=\"fixed-case\">CL<\/jats:styled-content> assessment could be used to reassure physicians and women that there is only a small chance of preterm birth in pregnancies after abdominal <jats:styled-content style=\"fixed-case\">RT<\/jats:styled-content>.<\/jats:p><\/jats:sec><jats:sec><jats:title>Tweetable abstract<\/jats:title><jats:p>Mid\u2010trimester residual cervical length is\u00a0a\u00a0good predictor of preterm birth after radical trachelectomy.<\/jats:p><\/jats:sec>","DOI":"10.1111\/1471-0528.14688","type":"journal-article","created":{"date-parts":[[2017,4,18]],"date-time":"2017-04-18T13:49:11Z","timestamp":1492523351000},"page":"1729-1735","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":39,"title":["Mid\u2010trimester residual cervical length and the risk of preterm birth in pregnancies after abdominal radical trachelectomy: a retrospective 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