{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,4,24]],"date-time":"2025-04-24T04:23:37Z","timestamp":1745468617310,"version":"3.40.4"},"reference-count":8,"publisher":"S. Karger AG","issue":"4","license":[{"start":{"date-parts":[[2024,1,1]],"date-time":"2024-01-01T00:00:00Z","timestamp":1704067200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/karger.com\/pages\/terms-and-conditions"},{"start":{"date-parts":[[2024,1,1]],"date-time":"2024-01-01T00:00:00Z","timestamp":1704067200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/karger.com\/pages\/terms-and-conditions"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Gynecol Obstet Invest"],"published-print":{"date-parts":[[2024]]},"abstract":"<b><i>Objectives:<\/i><\/b> A recent randomized controlled trial of first-trimester anatomy ultrasound in obese women found some advantages to using this technique in this population, but some aspects of feasibility were not clear, such as whether first-trimester ultrasound can be brought outside of a research setting. The learning curve for first-trimester anatomy has been described in the general population, but a learning curve has not been described for this technique in obese patients. This study sought to describe a learning curve for first-trimester anatomy ultrasounds in obese patients with an operator familiar with the basics of first-trimester imaging. <b><i>Design:<\/i><\/b> This was a secondary analysis of the EASE-O pilot randomized controlled trial (NCT04639973), which recruited 128 women with a BMI \u226535 kg\/m<sup>2<\/sup> and randomized them into two groups based on the timing of the first evaluation of fetal anatomy, to compare the completion rate of first- and second-trimester anatomy ultrasound. <b><i>Participants:<\/i><\/b> Pregnant women with a BMI \u226535 kg\/m<sup>2<\/sup> participated in the study. <b><i>Setting:<\/i><\/b> Between January 2021 and February 2022, the study was conducted at maternal-fetal medicine clinics in Houston, TX, USA. <b><i>Methods:<\/i><\/b> This secondary analysis evaluated data on the completion rate of first-trimester scans from the parent trial. Scans were grouped into bin sizes of 3, and prop_model for R version 4.2.0 for Windows was used to generate a learning curve across the first 60 scans. <b><i>Results:<\/i><\/b> The parent study included 60 scans performed by one imager who had previously only done first-trimester scans in lean patients for limited anatomy. The probability of a complete scan increased over 60 scans from 0.38 to 0.69; 29 scans were required to reach the final probability, after which only marginal improvement followed. <b><i>Limitations:<\/i><\/b> The major limitation is the inclusion of only one operator for this curve. <b><i>Conclusions:<\/i><\/b> For an ultrasound operator with basic familiarity in first-trimester imaging, approximately 30 scans are needed to acquire a completion rate of 70% for detailed first-trimester anatomy in women with BMI \u226535 kg\/m<sup>2<\/sup>. This can be used in education and training programs focused on imaging in the first trimester. <\/jats:p>","DOI":"10.1159\/000538477","type":"journal-article","created":{"date-parts":[[2024,4,17]],"date-time":"2024-04-17T21:00:34Z","timestamp":1713387634000},"page":"346-350","source":"Crossref","is-referenced-by-count":0,"title":["A Learning Curve for First-Trimester Anatomy Ultrasound in Obese Patients"],"prefix":"10.1159","volume":"89","author":[{"given":"Cara","family":"Buskmiller","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sarah E.","family":"Toates","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Vanessa","family":"Rodriguez","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Edgar","family":"Hernandez-Andrade","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"127","published-online":{"date-parts":[[2024,3,22]]},"reference":[{"key":"ref1","doi-asserted-by":"publisher","DOI":"10.1002\/uog.26106"},{"key":"ref2","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajogmf.2023.101143"},{"key":"ref3","doi-asserted-by":"publisher","DOI":"10.1016\/s0029-7844(02)02590-5"},{"key":"ref4","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pone.0279770"},{"key":"ref5","doi-asserted-by":"publisher","DOI":"10.7863\/jum.2011.30.5.65"},{"key":"ref6","doi-asserted-by":"publisher","DOI":"10.1002\/jum.15477"},{"key":"ref7","doi-asserted-by":"publisher","DOI":"10.1080\/14767058.2021.1998442"},{"key":"ref8","doi-asserted-by":"publisher","DOI":"10.1055\/s-0036-1579652"}],"container-title":["Gynecologic and Obstetric Investigation"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/karger.com\/goi\/article-pdf\/89\/4\/346\/4262895\/000538477.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/karger.com\/goi\/article-pdf\/89\/4\/346\/4262895\/000538477.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,4,23]],"date-time":"2025-04-23T15:13:18Z","timestamp":1745421198000},"score":1,"resource":{"primary":{"URL":"https:\/\/karger.com\/article\/doi\/10.1159\/000538477"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2024]]},"references-count":8,"journal-issue":{"issue":"4","published-online":{"date-parts":[[2024,8,7]]},"published-print":{"date-parts":[[2024,8,7]]}},"URL":"https:\/\/doi.org\/10.1159\/000538477","archive":["Portico"],"relation":{},"ISSN":["0378-7346","1423-002X"],"issn-type":[{"type":"print","value":"0378-7346"},{"type":"electronic","value":"1423-002X"}],"subject":[],"published":{"date-parts":[[2024]]}}}