{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,27]],"date-time":"2026-09-27T16:54:40Z","timestamp":1790528080078,"version":"4.1.0"},"reference-count":20,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2014,6,3]],"date-time":"2014-06-03T00:00:00Z","timestamp":1401753600000},"content-version":"vor","delay-in-days":2,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["obgyn.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Ultrasound in Obstet & Gyne"],"published-print":{"date-parts":[[2014,6]]},"abstract":"ABSTRACT<\/jats:title>Objective<\/jats:title>To evaluate the hypothesis that intrapartum ultrasound (ITU<\/jats:styled-content>) measurements, including the angle of progression (AOP<\/jats:styled-content>), progression distance (PD<\/jats:styled-content>) and head direction (HD<\/jats:styled-content>), can predict complicated forceps delivery in non\u2010occiput posterior deliveries<\/jats:italic>.<\/jats:p><\/jats:sec>Methods<\/jats:title>In this prospective observational study, a single operator performed ITU<\/jats:styled-content> on 30 patients with an indication for operative forceps delivery. Managing obstetricians were blinded to the results. ITU<\/jats:styled-content> was performed just before blade application, between contractions and concurrently with contractions and active pushing. Forceps delivery was classified as complicated when one or more of the following situations occurred: three or more tractions; a subjective impression of a difficult or failed application; a third\u2010degree or higher perineal tear; significant bleeding during the episiotomy repair; major tear; significant traumatic neonatal lesion<\/jats:italic>.<\/jats:p><\/jats:sec>Results<\/jats:title>Twenty\u2010one forceps deliveries were classified as uncomplicated and nine were complicated. The strongest predictor of a complicated forceps delivery, calculated using the area under the receiver\u2013operating characteristics curve (AUC<\/jats:styled-content>), was the AOP<\/jats:styled-content> between contractions (AOP1<\/jats:styled-content>) (AUC\u2009=\u200998.9%). The best cut\u2010off for predicting a difficult forceps delivery was an AOP1<\/jats:styled-content> of 138\u00b0 (sensitivity\u2009=\u200985.7%, specificity\u2009=\u2009100%). The best predictive model included both the AOP1<\/jats:styled-content> and the HD<\/jats:styled-content> during a contraction with active pushing (HD2<\/jats:styled-content>)<\/jats:italic>.<\/jats:p><\/jats:sec>Conclusion<\/jats:title>The sonographic parameters AOP<\/jats:styled-content> and HD<\/jats:styled-content> can be used to predict complicated operative forceps delivery in fetuses in non\u2010occiput posterior position. Copyright \u00a9 2013 ISUOG. Published by John Wiley & Sons Ltd<\/jats:italic>.<\/jats:p><\/jats:sec>","DOI":"10.1002\/uog.13256","type":"journal-article","created":{"date-parts":[[2013,11,21]],"date-time":"2013-11-21T21:20:57Z","timestamp":1385068857000},"page":"687-692","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":64,"title":["Use of intrapartum ultrasound in the prediction of complicated operative forceps delivery of fetuses in non\u2010occiput posterior position"],"prefix":"10.1002","volume":"43","author":[{"given":"M. J.","family":"Cuerva","sequence":"first","affiliation":[{"name":"Department of Obstetrics La Paz University Hospital Madrid Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"C.","family":"Bamberg","sequence":"additional","affiliation":[{"name":"Department of Obstetrics Charit\u00e9 University Hospital Berlin Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"P.","family":"Tobias","sequence":"additional","affiliation":[{"name":"Department of Obstetrics La Paz University Hospital Madrid Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"M. M.","family":"Gil","sequence":"additional","affiliation":[{"name":"Department of Obstetrics La Paz University Hospital Madrid Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"M.","family":"De La Calle","sequence":"additional","affiliation":[{"name":"Department of Obstetrics La Paz University Hospital Madrid Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"J. 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