{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,6]],"date-time":"2026-06-06T07:40:34Z","timestamp":1780731634995,"version":"3.54.1"},"reference-count":14,"publisher":"Wiley","issue":"11","license":[{"start":{"date-parts":[[2021,1,9]],"date-time":"2021-01-09T00:00:00Z","timestamp":1610150400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/100014349","name":"Society For Maternal-Fetal Medicine","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100014349","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["J of Ultrasound Medicine"],"published-print":{"date-parts":[[2021,11]]},"abstract":"<jats:sec><jats:title>Objectives<\/jats:title><jats:p>To identify whether a poorly developed lower uterine segment (PDLUS) observed during cervical length (CL) screening affects the duration of gestation in women with no prior spontaneous preterm birth (sPTB).<\/jats:p><\/jats:sec><jats:sec><jats:title>Materials and Methods<\/jats:title><jats:p>A retrospective cohort study of women with a singleton gestation and no prior sPTB, who underwent transvaginal CL screening at our institution. We excluded women with progesterone exposure, major anomalies, and women delivering elsewhere. Women with PDLUS were compared to those with a measured (normal) CL \u226525\u2009mm. Primary outcome: birth gestational age (GA). Secondary outcomes: sPTB &lt;35 and 37\u2009weeks, hospital evaluation for preterm labor without delivery, delivery indication, and mode. A Cox proportional\u2010hazards survival model considered time from CL scan to delivery. We powered the study to detect a one\u2010half week difference in birth GA.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>We included 270 women with PDLUS and 985 women with normal CL. Mean birth GA was 38.9\u2009\u00b1\u20092.0\u2009weeks with PDLUS versus 38.7\u2009\u00b1\u20092.4\u2009weeks with normal CL (p\u00a0=\u00a0.10). Women with PDLUS were less likely to experience sPTB &lt;37\u2009weeks (1.1% vs 3.6%; p\u00a0=\u00a00.04). There was no difference in sPTB &lt;35\u2009weeks (0.8% vs 1.7%; p\u00a0=\u00a0.25). Hospital evaluation for preterm labor (17% vs 19%; p\u00a0=\u00a0.54), delivery indication, and mode were not different. The hazard ratio for earlier birth in women with PDLUS was 0.67 (95% CI 0.46, 0.98; p\u00a0=\u00a0.04).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>We observed no difference in mean GA at birth; however, PDLUS was protective against sPTB &lt;37\u2009weeks and was associated with a lower hazard ratio for earlier birth.<\/jats:p><\/jats:sec>","DOI":"10.1002\/jum.15618","type":"journal-article","created":{"date-parts":[[2021,1,15]],"date-time":"2021-01-15T00:46:20Z","timestamp":1610671580000},"page":"2353-2360","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["<scp>Mid\u2010Trimester<\/scp> Cervical Length Screening"],"prefix":"10.1002","volume":"40","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7331-046X","authenticated-orcid":false,"given":"David A.","family":"Becker","sequence":"first","affiliation":[{"name":"Division of Maternal\u2010Fetal Medicine. Department of Obstetrics and Gynecology Center for Women's Reproductive Health at the University of Alabama at Birmingham  Birmingham Alabama USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Timothy N.","family":"Dunn","sequence":"additional","affiliation":[{"name":"Division of Maternal\u2010Fetal Medicine. Department of Obstetrics and Gynecology Center for Women's Reproductive Health at the University of Alabama at Birmingham  Birmingham Alabama USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jeff M.","family":"Szychowski","sequence":"additional","affiliation":[{"name":"Division of Maternal\u2010Fetal Medicine. Department of Obstetrics and Gynecology Center for Women's Reproductive Health at the University of Alabama at Birmingham  Birmingham Alabama USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"John","family":"Owen","sequence":"additional","affiliation":[{"name":"Division of Maternal\u2010Fetal Medicine. Department of Obstetrics and Gynecology Center for Women's Reproductive Health at the University of Alabama at Birmingham  Birmingham Alabama USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2021,1,9]]},"reference":[{"key":"e_1_2_7_2_1","doi-asserted-by":"publisher","DOI":"10.1097\/AOG.0b013e3182723b1b"},{"key":"e_1_2_7_3_1","first-page":"B2","volume":"215","author":"Society for Maternal\u2010Fetal Medicine","year":"2016","journal-title":"Am J Obstet Gynecol"},{"key":"e_1_2_7_4_1","doi-asserted-by":"publisher","DOI":"10.1001\/jama.286.11.1340"},{"key":"e_1_2_7_5_1","doi-asserted-by":"publisher","DOI":"10.1097\/AOG.0b013e3182860b8d"},{"key":"e_1_2_7_6_1","unstructured":"Cervical length education and review: cervix measurement criteria. Perinatal Quality Foundation.https:\/\/clear.perinatalquality.org\/wfImageCriteria.aspx. Accessed February 21 2020."},{"key":"e_1_2_7_7_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0002-9378(96)70408-8"},{"key":"e_1_2_7_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/0002-9378(95)91469-2"},{"key":"e_1_2_7_9_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jbi.2008.08.010"},{"key":"e_1_2_7_10_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jbi.2019.103208"},{"key":"e_1_2_7_11_1","doi-asserted-by":"publisher","DOI":"10.1097\/00006250-199904000-00008"},{"key":"e_1_2_7_12_1","article-title":"Multicenter randomized trial of cerclage for preterm birth prevention in high\u2010risk women with shortened midtrimester cervical length","volume":"201","author":"Owen J","year":"2009","journal-title":"Am J Obstet Gynecol"},{"key":"e_1_2_7_13_1","doi-asserted-by":"publisher","DOI":"10.1097\/AOG.0b013e31820ca847"},{"key":"e_1_2_7_14_1","doi-asserted-by":"publisher","DOI":"10.1097\/AOG.0000000000000428"},{"key":"e_1_2_7_15_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajog.2015.12.020"}],"container-title":["Journal of Ultrasound in Medicine"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/jum.15618","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/full-xml\/10.1002\/jum.15618","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/jum.15618","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,8,29]],"date-time":"2023-08-29T15:07:25Z","timestamp":1693321645000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/jum.15618"}},"subtitle":["Effect of Poorly Developed Lower Uterine Segment on Pregnancy Outcome"],"short-title":[],"issued":{"date-parts":[[2021,1,9]]},"references-count":14,"journal-issue":{"issue":"11","published-print":{"date-parts":[[2021,11]]}},"alternative-id":["10.1002\/jum.15618"],"URL":"https:\/\/doi.org\/10.1002\/jum.15618","archive":["Portico"],"relation":{},"ISSN":["0278-4297","1550-9613"],"issn-type":[{"value":"0278-4297","type":"print"},{"value":"1550-9613","type":"electronic"}],"subject":[],"published":{"date-parts":[[2021,1,9]]},"assertion":[{"value":"2020-08-18","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2020-12-12","order":1,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2021-01-09","order":2,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}