{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,17]],"date-time":"2026-02-17T13:08:47Z","timestamp":1771333727629,"version":"3.50.1"},"reference-count":38,"publisher":"Walter de Gruyter GmbH","issue":"2","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2018,2,23]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec id=\"j_jpm-2016-0371_s_999\"><jats:title id=\"d4759861e18633\">Objective:<\/jats:title><jats:p>To analyze the accuracy of ultrasound prediction of birth weight discordance (BWD) and the influence of chorionicity and fetal growth restriction (FGR) on ultrasound performance.<\/jats:p><\/jats:sec><jats:sec id=\"j_jpm-2016-0371_s_998\"><jats:title id=\"d4759861e18641\">Methods:<\/jats:title><jats:p>Retrospective analysis of 176 twin pregnancies at a Portuguese tertiary center, between 2008 and 2014. Last ultrasound biometry was recorded. Cases with delivery before 24 weeks, fetal malformations, interval between last ultrasound and deliver &gt;3 weeks, twin-to-twin transfusion syndrome and monoamniotic pregnancies were excluded. The accuracy of prediction of BWD was assessed using the area under the receiver-operating characteristics curve (AUC).<\/jats:p><\/jats:sec><jats:sec id=\"j_jpm-2016-0371_s_997\"><jats:title id=\"d4759861e18649\">Results:<\/jats:title><jats:p>BWD \u226520% was present in 21.6% of twin pregnancies. EBW had the best predictive performance for BWD (AUC 0.838, 95%CI 0.760\u20130.916), with a negative predictive value of 86.9% and a positive predictive value of 51.3%. Chorionicity did not influence ultrasound performance. None of the biometric variables analyzed was predictive of BWD in pregnancies without FGR.<\/jats:p><\/jats:sec><jats:sec id=\"j_jpm-2016-0371_s_996\"><jats:title id=\"d4759861e18657\">Conclusion:<\/jats:title><jats:p>The accuracy of ultrasound in the prediction of BWD is limited, particularly in pregnancies without fetal growth restriction. Clinical decisions should not rely on BWD alone.<\/jats:p><\/jats:sec>","DOI":"10.1515\/jpm-2016-0371","type":"journal-article","created":{"date-parts":[[2017,7,29]],"date-time":"2017-07-29T10:01:37Z","timestamp":1501322497000},"page":"163-168","source":"Crossref","is-referenced-by-count":5,"title":["The role of ultrasound in the prediction of birth weight discordance in twin pregnancies: are we there yet?"],"prefix":"10.1515","volume":"46","author":[{"given":"Ana Raquel","family":"Neves","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Filipa","family":"Nunes","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Miguel","family":"Branco","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Maria do C\u00e9u","family":"Almeida","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Isabel","family":"Santos Silva","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"374","reference":[{"key":"ref81","doi-asserted-by":"crossref","first-page":"129","DOI":"10.1148\/radiology.181.1.1887021","article-title":"In utero analysis of fetal growth: a sonographic weight standard","volume":"181","year":"1991","journal-title":"Radiology"},{"key":"ref151","doi-asserted-by":"crossref","first-page":"295","DOI":"10.1016\/j.bpobgyn.2013.12.003","article-title":"Growth discordance","volume":"28","year":"2014","journal-title":"Best Pract Res Clin Obstet Gynaecol"},{"key":"ref171","doi-asserted-by":"crossref","first-page":"703","DOI":"10.1001\/jama.1994.03510330081039","article-title":"Users\u2019 guide to the medical literature III: how to use an article about a diagnostic test. 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