{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2022,4,2]],"date-time":"2022-04-02T10:59:08Z","timestamp":1648897148871},"reference-count":0,"publisher":"Georg Thieme Verlag KG","issue":"08","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Amer J Perinatol"],"published-print":{"date-parts":[[2019,7]]},"abstract":"<jats:p>\n            Objective\u2003To quantify the degree of change in cervical length (CL) over a 3-minute transvaginal ultrasound.<\/jats:p><jats:p>\n            Study Design\u2003We conducted a prospective observational study of nulliparous patients who underwent routine transvaginal CL screening at the time of their second-trimester ultrasound. We recorded CL at four time points (0, 1, 2, 3 minutes) and compared these values to determine the minute-to-minute change within a single patient.<\/jats:p><jats:p>\n            Results\u2003A total of 771 patients were included. The mean gestational age was 20.8 weeks (\u00b10.84). We used a linear mixed effect model to assess if each minute during the ultrasound is associated with a change in CL. The intraclass correlation coefficient between minute 0 to minute 3 was 0.82 (95% confidence interval: 0.80, 0.84). This indicates that there is a relatively high within-patient correlation in CL during their ultrasound. Additionally, we stratified patients based on their starting CL; the intraclass correlation coefficient remained high for all groups. We additionally compared CL at each minute. Although there is a statistically significant difference between several time points, the actual difference is small and not clinically meaningful.<\/jats:p><jats:p>\n            Conclusion\u2003The variation in CL over a 3-minute transvaginal ultrasound examination is not clinically significant. It may be reasonable to conduct this examination over a shorter period.<\/jats:p>","DOI":"10.1055\/s-0038-1676616","type":"journal-article","created":{"date-parts":[[2018,12,21]],"date-time":"2018-12-21T23:48:13Z","timestamp":1545436093000},"page":"781-784","source":"Crossref","is-referenced-by-count":0,"title":["Variation in Cervical Length over Time during a Single Transvaginal Ultrasound Examination"],"prefix":"10.1055","volume":"36","author":[{"given":"Katherine A.","family":"Connolly","sequence":"additional","affiliation":[{"name":"Department of Obstetrics, Gynecology, and Reproductive Science, Icahn School of Medicine at Mount Sinai, New York, New York"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Luciana","family":"Vieira","sequence":"additional","affiliation":[{"name":"Department of Obstetrics, Gynecology, and Reproductive Science, Icahn School of Medicine at Mount Sinai, New York, New York"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Elizabeth M.","family":"Yoselevsky","sequence":"additional","affiliation":[{"name":"Department of Obstetrics, Gynecology, and Reproductive Science, Icahn School of Medicine at Mount Sinai, New York, New York"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Stephanie","family":"Pan","sequence":"additional","affiliation":[{"name":"Department of Population Health Science and Policy, Icahn School of Medicine at Mount Sinai, New York, New York"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Joanne L.","family":"Stone","sequence":"additional","affiliation":[{"name":"Department of Obstetrics, Gynecology, and Reproductive Science, Icahn School of Medicine at Mount Sinai, New York, New York"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"194","published-online":{"date-parts":[[2018,12,21]]},"container-title":["American Journal of Perinatology"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/www.thieme-connect.de\/products\/ejournals\/pdf\/10.1055\/s-0038-1676616.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2019,6,23]],"date-time":"2019-06-23T22:31:23Z","timestamp":1561329083000},"score":1,"resource":{"primary":{"URL":"http:\/\/www.thieme-connect.de\/DOI\/DOI?10.1055\/s-0038-1676616"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2018,12,21]]},"references-count":0,"journal-issue":{"issue":"08","published-online":{"date-parts":[[2019,6,23]]},"published-print":{"date-parts":[[2019,7]]}},"URL":"https:\/\/doi.org\/10.1055\/s-0038-1676616","relation":{},"ISSN":["0735-1631","1098-8785"],"issn-type":[{"value":"0735-1631","type":"print"},{"value":"1098-8785","type":"electronic"}],"subject":[],"published":{"date-parts":[[2018,12,21]]}}}