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For instance, a sonographic cervical length (CL) &gt; 30\u2009mm and present cervical gland area have a 96-97% negative predictive value for preterm delivery at &lt;37 weeks. Available evidence supports the use of progesterone to women with cervical length \u226425\u2009mm, irrespective of other risk factors. In women with prior spontaneous PTD with asymptomatic cervical shortening (CL \u2264 25\u2009mm), prophylactic cerclage procedure must be performed and weekly to every two weeks follow-up is essential. This article reviews the evidence in support of the clinical introduction of transvaginal sonography for both the prediction and management of spontaneous preterm labour.<\/jats:p>","DOI":"10.1155\/2012\/201628","type":"journal-article","created":{"date-parts":[[2012,2,22]],"date-time":"2012-02-22T21:01:28Z","timestamp":1329944488000},"page":"1-10","source":"Crossref","is-referenced-by-count":21,"title":["Transvaginal Sonographic Evaluation of the Cervix in Asymptomatic Singleton Pregnancy and Management Options in Short Cervix"],"prefix":"10.1155","volume":"2012","author":[{"given":"Resul","family":"Arisoy","sequence":"first","affiliation":[{"name":"Department of Obstetrics and Gynaecology, Gole State Hospital, 34660 Ardahan, Turkey"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Murat","family":"Yayla","sequence":"additional","affiliation":[{"name":"Department of Perinatology, Obstetrics and Gynecology, International Hospital, 34660 Istanbul, 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