{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,2]],"date-time":"2026-06-02T03:22:18Z","timestamp":1780370538937,"version":"3.54.1"},"reference-count":20,"publisher":"Wiley","issue":"10","license":[{"start":{"date-parts":[[2014,8,16]],"date-time":"2014-08-16T00:00:00Z","timestamp":1408147200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["obgyn.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Acta Obstet Gynecol Scand"],"published-print":{"date-parts":[[2014,10]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Objective<\/jats:title><jats:p>To evaluate if ultrasound\u2010determined occipito\u2010transverse position early in the second stage of labor is associated with operative delivery.<\/jats:p><\/jats:sec><jats:sec><jats:title>Design<\/jats:title><jats:p>Retrospective review of two prospective cohort studies.<\/jats:p><\/jats:sec><jats:sec><jats:title>Setting<\/jats:title><jats:p>An Australian tertiary referral hospital.<\/jats:p><\/jats:sec><jats:sec><jats:title>Population<\/jats:title><jats:p>Women with term, cephalic singleton pregnancies.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Retrospective analysis of data from two prospective studies. Logistic regression was undertaken to assess the independent contribution of the occipito\u2010transverse position to operative delivery.<\/jats:p><\/jats:sec><jats:sec><jats:title>Main outcome measure<\/jats:title><jats:p>Operative delivery (cesarean section, forceps or vacuum extraction).<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Among 422 women included, the occipito\u2010transverse position was present in 80, occipito\u2010anterior in 303 and the occipito\u2010posterior in 39. Compared with occipito\u2010anterior, the adjusted odds ratio for operative delivery was 2.1 (95% confidence interval 1.2\u20133.8, <jats:italic>p<\/jats:italic>\u00a0=\u00a00.02) for the occipito\u2010transverse position, and 7.4 (95% confidence interval 3.2\u201317) for the occipito\u2010posterior position. Factors that independently predicted operative delivery were nulliparity, abnormal second stage cardiotocography, maternal place of birth and epidural analgesia. The length of second stage of labor was longer for the occipito\u2010transverse group than for the occipito\u2010anterior group (median 2\u00a0h 7\u00a0min vs. 1\u00a0h 36\u00a0min, <jats:italic>p<\/jats:italic>\u00a0=\u00a00.003).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>The occipito\u2010transverse position early in the second stage of labor was associated with an increased operative delivery rate.<\/jats:p><\/jats:sec>","DOI":"10.1111\/aogs.12465","type":"journal-article","created":{"date-parts":[[2014,7,24]],"date-time":"2014-07-24T14:24:04Z","timestamp":1406211844000},"page":"1018-1024","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":13,"title":["Is there an association between sonographically determined occipito\u2010transverse position in the second stage of labor and operative delivery?"],"prefix":"10.1111","volume":"93","author":[{"given":"Hala","family":"Phipps","sequence":"first","affiliation":[{"name":"RPA Women and Babies Royal Prince Alfred Hospital Sydney New South Wales Australia"},{"name":"Discipline of Obstetrics, Gynaecology and Neonatology Faculty of Medicine University of Sydney Sydney New South Wales Australia"},{"name":"Faculty of Nursing University of Sydney Sydney New South Wales Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jon A.","family":"Hyett","sequence":"additional","affiliation":[{"name":"RPA Women and Babies Royal Prince Alfred Hospital Sydney New South Wales Australia"},{"name":"Discipline of Obstetrics, Gynaecology and Neonatology Faculty of Medicine University of Sydney Sydney New South Wales Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kathy","family":"Graham","sequence":"additional","affiliation":[{"name":"RPA Women and Babies Royal Prince Alfred Hospital Sydney New South Wales Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wendy J.","family":"Carseldine","sequence":"additional","affiliation":[{"name":"RPA Women and Babies Royal Prince Alfred Hospital Sydney New South Wales Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jane","family":"Tooher","sequence":"additional","affiliation":[{"name":"RPA Women and Babies Royal Prince Alfred Hospital Sydney New South Wales Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bradley","family":"de Vries","sequence":"additional","affiliation":[{"name":"RPA Women and Babies Royal Prince Alfred Hospital Sydney New South Wales Australia"},{"name":"Discipline of Obstetrics, Gynaecology and Neonatology Faculty of Medicine University of Sydney Sydney New South Wales Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2014,8,16]]},"reference":[{"key":"e_1_2_9_2_1","doi-asserted-by":"publisher","DOI":"10.1097\/01.AOG.0000154889.47063.84"},{"key":"e_1_2_9_3_1","doi-asserted-by":"publisher","DOI":"10.1080\/jmf.12.3.172.177"},{"key":"e_1_2_9_4_1","doi-asserted-by":"publisher","DOI":"10.1097\/01.AOG.0000158861.43593.49"},{"key":"e_1_2_9_5_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1471-0528.1952.tb04137.x"},{"key":"e_1_2_9_6_1","doi-asserted-by":"publisher","DOI":"10.1080\/jmf.13.1.59.63"},{"key":"e_1_2_9_7_1","doi-asserted-by":"publisher","DOI":"10.1046\/j.1469-0705.2002.00656.x"},{"key":"e_1_2_9_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ejogrb.2005.04.009"},{"key":"e_1_2_9_9_1","doi-asserted-by":"publisher","DOI":"10.1055\/s-2007-963017"},{"key":"e_1_2_9_10_1","first-page":"117","article-title":"Effects of persistent occiput posterior presentation on mode of delivery","volume":"198","author":"Gardberg M","year":"1994","journal-title":"Z Geburtshilfe Perinatol"},{"key":"e_1_2_9_11_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1479-828X.2000.tb03334.x"},{"key":"e_1_2_9_12_1","doi-asserted-by":"publisher","DOI":"10.1097\/00003081-200406000-00012"},{"key":"e_1_2_9_13_1","doi-asserted-by":"publisher","DOI":"10.1097\/AOG.0b013e3181cfbefd"},{"key":"e_1_2_9_14_1","doi-asserted-by":"publisher","DOI":"10.1002\/uog.10102"},{"key":"e_1_2_9_15_1","doi-asserted-by":"publisher","DOI":"10.1111\/ajo.12041"},{"key":"e_1_2_9_16_1","doi-asserted-by":"publisher","DOI":"10.1111\/ajo.12192"},{"key":"e_1_2_9_17_1","volume-title":"The use of electronic fetal monitoring. 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