{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,30]],"date-time":"2026-09-30T17:58:07Z","timestamp":1790791087367,"version":"4.1.0"},"reference-count":69,"publisher":"Elsevier BV","issue":"6","license":[{"start":{"date-parts":[[2017,12,1]],"date-time":"2017-12-01T00:00:00Z","timestamp":1512086400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"},{"start":{"date-parts":[[2017,12,1]],"date-time":"2017-12-01T00:00:00Z","timestamp":1512086400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/legal\/tdmrep-license"}],"content-domain":{"domain":["ajog.org","clinicalkey.com","clinicalkey.com.au","clinicalkey.es","clinicalkey.fr","clinicalkey.jp","elsevier.com","sciencedirect.com"],"crossmark-restriction":true},"short-container-title":["American Journal of Obstetrics and Gynecology"],"published-print":{"date-parts":[[2017,12]]},"DOI":"10.1016\/j.ajog.2017.07.025","type":"journal-article","created":{"date-parts":[[2017,7,22]],"date-time":"2017-07-22T17:50:29Z","timestamp":1500745829000},"page":"633-641","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":85,"title":["The use of intrapartum ultrasound to diagnose malpositions and cephalic malpresentations"],"prefix":"10.1016","volume":"217","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1080-366X","authenticated-orcid":false,"given":"Federica","family":"Bellussi","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tullio","family":"Ghi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Aly","family":"Youssef","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ginevra","family":"Salsi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Francesca","family":"Giorgetta","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dila","family":"Parma","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Giuliana","family":"Simonazzi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gianluigi","family":"Pilu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"78","reference":[{"key":"10.1016\/j.ajog.2017.07.025_bib1","first-page":"915","article-title":"Persistent fetal occiput posterior position: obstetric outcomes","volume":"101","author":"Ponkey","year":"2003","journal-title":"Obstet Gynecol"},{"key":"10.1016\/j.ajog.2017.07.025_bib2","doi-asserted-by":"crossref","first-page":"355.e1","DOI":"10.1016\/j.ajog.2014.10.023","article-title":"Management of fetal malposition in the second stage of labor: a propensity score analysis","volume":"212","author":"Aiken","year":"2015","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ajog.2017.07.025_bib3","doi-asserted-by":"crossref","first-page":"357","DOI":"10.1080\/14767050802037647","article-title":"Face and brow presentation: independent risk factors","volume":"21","author":"Bashiri","year":"2008","journal-title":"J\u00a0Matern Fetal Neonatal Med"},{"key":"10.1016\/j.ajog.2017.07.025_bib4","doi-asserted-by":"crossref","first-page":"540","DOI":"10.1111\/j.1600-0412.2011.01105.x","article-title":"Malpresentations\u2013impact on mode of delivery","volume":"90","author":"Gardberg","year":"2011","journal-title":"Acta Obstet Gynecol Scand"},{"key":"10.1016\/j.ajog.2017.07.025_bib5","doi-asserted-by":"crossref","first-page":"1890","DOI":"10.3109\/14767058.2014.972925","article-title":"Asynclitism: a literature review of an often forgotten clinical condition","volume":"28","author":"Malvasi","year":"2015","journal-title":"J\u00a0Matern Fetal Neonatal Med"},{"key":"10.1016\/j.ajog.2017.07.025_bib6","doi-asserted-by":"crossref","first-page":"165","DOI":"10.1016\/j.ogc.2004.12.005","article-title":"Labor with abnormal presentation and position","volume":"32","author":"Stitely","year":"2005","journal-title":"Obstet Gynecol Clin North Am"},{"key":"10.1016\/j.ajog.2017.07.025_bib7","doi-asserted-by":"crossref","first-page":"179","DOI":"10.1016\/j.ajog.2014.01.026","article-title":"Safe prevention of the primary cesarean delivery","volume":"210","author":"American College of Obstetricians and Gynecologists","year":"2014","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ajog.2017.07.025_bib8","doi-asserted-by":"crossref","first-page":"420","DOI":"10.1016\/j.ajog.2014.09.008","article-title":"Perils of the new labor management guidelines","volume":"212","author":"Cohen","year":"2015","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ajog.2017.07.025_bib9","doi-asserted-by":"crossref","first-page":"484","DOI":"10.1016\/j.ajog.2015.10.926","article-title":"Second-stage labor: how long is too long?","volume":"214","author":"Leveno","year":"2016","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ajog.2017.07.025_bib10","doi-asserted-by":"crossref","first-page":"824","DOI":"10.1067\/mob.2002.127142","article-title":"Reassessing the labor curve in nulliparous women","volume":"187","author":"Zhang","year":"2002","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ajog.2017.07.025_bib11","doi-asserted-by":"crossref","first-page":"361.e1","DOI":"10.1016\/j.ajog.2015.12.042","article-title":"Randomized controlled trial of prolonged second stage: extending the time limit vs usual guidelines","volume":"214","author":"Gimovsky","year":"2016","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ajog.2017.07.025_bib12","doi-asserted-by":"crossref","first-page":"407.e1","DOI":"10.1016\/j.ajog.2017.01.013","article-title":"Attempted operative vaginal delivery vs repeat cesarean in the second stage among women undergoing a trial of labor after cesarean delivery","volume":"216","author":"Son","year":"2017","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ajog.2017.07.025_bib13","doi-asserted-by":"crossref","first-page":"624","DOI":"10.1016\/j.ajog.2017.02.032","article-title":"Predictors of shoulder dystocia at the time of operative vaginal delivery","volume":"216","author":"Ducarme","year":"2017","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ajog.2017.07.025_bib14","doi-asserted-by":"crossref","first-page":"93.e1","DOI":"10.1016\/j.ajog.2015.03.025","article-title":"Does the number of forceps deliveries performed in residency predict use in practice?","volume":"213","author":"Andrews","year":"2015","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ajog.2017.07.025_bib15","doi-asserted-by":"crossref","first-page":"437","DOI":"10.1002\/uog.103","article-title":"Comparison of transvaginal digital examination with intrapartum sonography to determine fetal head position before instrumental delivery","volume":"21","author":"Akmal","year":"2003","journal-title":"Ultrasound Obstet Gynecol"},{"key":"10.1016\/j.ajog.2017.07.025_bib16","doi-asserted-by":"crossref","first-page":"172","DOI":"10.1080\/jmf.12.3.172.177","article-title":"Intrapartum sonography to determine fetal head position","volume":"12","author":"Akmal","year":"2002","journal-title":"J\u00a0Matern Fetal Neonatal Med"},{"key":"10.1016\/j.ajog.2017.07.025_bib17","doi-asserted-by":"crossref","DOI":"10.1159\/000457124","article-title":"Intrapartum ultrasound to differentiate flexion and deflexion in occipitoposterior rotation","author":"Bellussi","year":"2017","journal-title":"Fetal Diagn Ther"},{"key":"10.1016\/j.ajog.2017.07.025_bib18","doi-asserted-by":"crossref","first-page":"520","DOI":"10.3109\/14767058.2013.825598","article-title":"Occiput posterior position diagnosis: vaginal examination or intrapartum sonography? A clinical review","volume":"27","author":"Malvasi","year":"2014","journal-title":"J\u00a0Matern Fetal Neonatal Med"},{"key":"10.1016\/j.ajog.2017.07.025_bib19","doi-asserted-by":"crossref","first-page":"1029","DOI":"10.1111\/1471-0528.12810","article-title":"Instrumental delivery and ultrasound: a multicenter randomized controlled trial of ultrasound assessment of the fetal head position versus standard care as an approach to prevent morbidity at instrumental delivery","volume":"121","author":"Ramphul","year":"2014","journal-title":"BJOG"},{"key":"10.1016\/j.ajog.2017.07.025_bib20","doi-asserted-by":"crossref","first-page":"521","DOI":"10.1016\/j.ajog.2004.01.029","article-title":"Vaginal versus ultrasound examination of fetal occiput position during the second stage of labor","volume":"191","author":"Chou","year":"2004","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ajog.2017.07.025_bib21","doi-asserted-by":"crossref","first-page":"381","DOI":"10.1016\/j.ajog.2004.12.011","article-title":"Comparison of transvaginal sonography with digital examination and transabdominal sonography for the determination of fetal head position in the second stage of labor","volume":"193","author":"Zahalka","year":"2005","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ajog.2017.07.025_bib22","doi-asserted-by":"crossref","first-page":"490","DOI":"10.1002\/uog.14705","article-title":"Face presentation and persistent deep mentum transverse position diagnosed with three-dimensional ultrasound","volume":"45","author":"Eggebo","year":"2015","journal-title":"Ultrasound Obstet Gynecol"},{"key":"10.1016\/j.ajog.2017.07.025_bib23","doi-asserted-by":"crossref","first-page":"2408","DOI":"10.3109\/14767058.2015.1092137","article-title":"Intrapartum sonographic signs: new diagnostic tools in malposition and malrotation","volume":"29","author":"Malvasi","year":"2016","journal-title":"J\u00a0Matern Fetal Neonatal Med"},{"key":"10.1016\/j.ajog.2017.07.025_bib24","doi-asserted-by":"crossref","first-page":"2008","DOI":"10.1001\/jama.283.15.2008","article-title":"Meta-analysis of observational studies in epidemiology: a proposal for reporting. Meta-analysis of observational studies in epidemiology (MOOSE) group","volume":"283","author":"Stroup","year":"2000","journal-title":"JAMA"},{"key":"10.1016\/j.ajog.2017.07.025_bib25","doi-asserted-by":"crossref","first-page":"425","DOI":"10.1002\/uog.1064","article-title":"Investigation of occiput posterior delivery by intrapartum sonography","volume":"24","author":"Akmal","year":"2004","journal-title":"Ultrasound Obstet Gynecol"},{"key":"10.1016\/j.ajog.2017.07.025_bib26","doi-asserted-by":"crossref","first-page":"421","DOI":"10.1002\/uog.1065","article-title":"Intrapartum sonography to determine fetal occipital position: interobserver agreement","volume":"24","author":"Akmal","year":"2004","journal-title":"Ultrasound Obstet Gynecol"},{"key":"10.1016\/j.ajog.2017.07.025_bib27","doi-asserted-by":"crossref","first-page":"210","DOI":"10.1002\/uog.7504","article-title":"Sonographic assessment of fetal spine and head position during the first and second stages of labor for the diagnosis of persistent occiput posterior position: a pilot study","volume":"35","author":"Blasi","year":"2010","journal-title":"Ultrasound Obstet Gynecol"},{"key":"10.1016\/j.ajog.2017.07.025_bib28","doi-asserted-by":"crossref","first-page":"84.e1","DOI":"10.1016\/j.ajog.2016.02.020","article-title":"The \u201cocciput-spine angle\u201d: a new sonographic index of fetal head deflexion during the first stage of labor","volume":"215","author":"Ghi","year":"2016","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ajog.2017.07.025_bib29","doi-asserted-by":"crossref","first-page":"229","DOI":"10.1002\/uog.13385","article-title":"Sonographic diagnosis of lateral asynclitism: a new subtype of fetal head malposition as a main determinant of early labor arrest","volume":"45","author":"Ghi","year":"2015","journal-title":"Ultrasound Obstet Gynecol"},{"key":"10.1016\/j.ajog.2017.07.025_bib30","doi-asserted-by":"crossref","first-page":"803","DOI":"10.1002\/uog.17302","article-title":"Intrapartum diagnosis of posterior asynclitism using two-dimensional transperineal ultrasound","volume":"49","author":"Ghi","year":"2017","journal-title":"Ultrasound Obstet Gynecol"},{"key":"10.1016\/j.ajog.2017.07.025_bib31","doi-asserted-by":"crossref","first-page":"117","DOI":"10.1002\/uog.11077","article-title":"Intrapartum three-dimensional ultrasonographic imaging of face presentations: report of two cases","volume":"40","author":"Ghi","year":"2012","journal-title":"Ultrasound Obstet Gynecol"},{"key":"10.1016\/j.ajog.2017.07.025_bib32","doi-asserted-by":"crossref","first-page":"238","DOI":"10.1002\/uog.9034","article-title":"Intrapartum sonographic imaging of fetal head asynclitism","volume":"39","author":"Ghi","year":"2012","journal-title":"Ultrasound Obstet Gynecol"},{"key":"10.1016\/j.ajog.2017.07.025_bib33","doi-asserted-by":"crossref","first-page":"1868","DOI":"10.1111\/j.1447-0756.2011.01650.x","article-title":"Intrapartum translabial ultrasound demonstration of face presentation during first stage of labor","volume":"37","author":"Lau","year":"2011","journal-title":"J\u00a0Obstet Gynaecol Res"},{"key":"10.1016\/j.ajog.2017.07.025_bib34","doi-asserted-by":"crossref","first-page":"62","DOI":"10.1016\/j.ijgo.2009.05.024","article-title":"Intrapartum translabial ultrasound demonstrating brow presentation during the second stage of labor","volume":"107","author":"Lau","year":"2009","journal-title":"Int J Gynaecol Obstet"},{"key":"10.1016\/j.ajog.2017.07.025_bib35","doi-asserted-by":"crossref","first-page":"1839","DOI":"10.3109\/14767058.2014.969237","article-title":"Lateral asynclitism: introduction of a new terminology associated to specific fetal position of the fetal head diagnosed by ultrasound in the second stage of labor","volume":"28","author":"Malvasi","year":"2015","journal-title":"J\u00a0Matern Fetal Neonatal Med"},{"key":"10.1016\/j.ajog.2017.07.025_bib36","doi-asserted-by":"crossref","first-page":"1151","DOI":"10.3109\/14767058.2013.851188","article-title":"The fetal head evaluation during labor in the occiput posterior position: the ESA (evaluation by simulation algorithm) approach","volume":"27","author":"Malvasi","year":"2014","journal-title":"J\u00a0Matern Fetal Neonatal Med"},{"key":"10.1016\/j.ajog.2017.07.025_bib37","doi-asserted-by":"crossref","first-page":"508","DOI":"10.3109\/14767058.2011.648234","article-title":"Intrapartum sonography for fetal head asynclitism and transverse position: sonographic signs and comparison of diagnostic performance between transvaginal and digital examination","volume":"25","author":"Malvasi","year":"2012","journal-title":"J\u00a0Matern Fetal Neonatal Med"},{"key":"10.1016\/j.ajog.2017.07.025_bib38","doi-asserted-by":"crossref","first-page":"1289","DOI":"10.3109\/14767058.2015.1046374","article-title":"Intrapartum sonography: two signs to detect asynclitism degree","volume":"29","author":"Malvasi","year":"2016","journal-title":"J\u00a0Matern Fetal Neonatal Med"},{"key":"10.1016\/j.ajog.2017.07.025_bib39","first-page":"1","article-title":"Intrapartum sonography asynclitism diagnosis by transperineal ultrasonography","volume":"1","author":"Malvasi","year":"2017","journal-title":"J\u00a0Matern Fetal Neonatal Med"},{"key":"10.1016\/j.ajog.2017.07.025_bib40","doi-asserted-by":"crossref","first-page":"553","DOI":"10.3109\/14767058.2010.501129","article-title":"Intrapartum sonography sign for occiput posterior asynclitism diagnosis","volume":"24","author":"Malvasi","year":"2011","journal-title":"J\u00a0Matern Fetal Neonatal Med"},{"key":"10.1016\/j.ajog.2017.07.025_bib41","doi-asserted-by":"crossref","first-page":"476","DOI":"10.1002\/uog.12439","article-title":"How to perform ultrasound in labor: assessment of fetal occiput position","volume":"41","author":"Youssef","year":"2013","journal-title":"Ultrasound Obstet Gynecol"},{"key":"10.1016\/j.ajog.2017.07.025_bib42","doi-asserted-by":"crossref","first-page":"69.e1","DOI":"10.1016\/j.ajog.2017.03.009","article-title":"Sonographic prediction of outcome of vacuum deliveries: a multicenter, prospective cohort study","volume":"217","author":"Kahrs","year":"2017","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ajog.2017.07.025_bib43","doi-asserted-by":"crossref","first-page":"289","DOI":"10.1055\/s-2007-999882","article-title":"Perineal scanning","volume":"3","author":"Jeanty","year":"1986","journal-title":"Am J Perinatol"},{"key":"10.1016\/j.ajog.2017.07.025_bib44","doi-asserted-by":"crossref","first-page":"331","DOI":"10.1002\/uog.6313","article-title":"Diagnosis of station and rotation of the fetal head in the second stage of labor with intrapartum translabial ultrasound","volume":"33","author":"Ghi","year":"2009","journal-title":"Ultrasound Obstet Gynecol"},{"key":"10.1016\/j.ajog.2017.07.025_bib45","doi-asserted-by":"crossref","first-page":"532","DOI":"10.1111\/j.1471-0528.2004.00134.x","article-title":"Ultrasonographic occiput position in early labor in the prediction of caesarean section","volume":"111","author":"Akmal","year":"2004","journal-title":"BJOG"},{"key":"10.1016\/j.ajog.2017.07.025_bib46","doi-asserted-by":"crossref","first-page":"907","DOI":"10.1016\/j.ajog.2004.05.075","article-title":"Operative vaginal delivery: a comparison of forceps and vacuum for success rate and risk of rectal sphincter injury","volume":"191","author":"Damron","year":"2004","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ajog.2017.07.025_bib47","doi-asserted-by":"crossref","first-page":"e4","DOI":"10.1016\/j.ajog.2006.01.026","article-title":"Significance of accidental extensions in the lower uterine segment during cesarean delivery","volume":"194","author":"de la Torre","year":"2006","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ajog.2017.07.025_bib48","doi-asserted-by":"crossref","first-page":"525","DOI":"10.1016\/j.ajog.2005.03.059","article-title":"Occiput posterior fetal head position increases the risk of anal sphincter injury in vacuum-assisted deliveries","volume":"193","author":"Wu","year":"2005","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ajog.2017.07.025_bib49","doi-asserted-by":"crossref","first-page":"1702","DOI":"10.1016\/j.ajog.2004.11.047","article-title":"The impact of occiput posterior fetal head position on the risk of anal sphincter injury in forceps-assisted vaginal deliveries","volume":"192","author":"Benavides","year":"2005","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ajog.2017.07.025_bib50","doi-asserted-by":"crossref","first-page":"308.e1","DOI":"10.1016\/j.ajog.2007.06.051","article-title":"Predictors of failed operative vaginal delivery: a single-center experience","volume":"197","author":"Ben-Haroush","year":"2007","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ajog.2017.07.025_bib51","doi-asserted-by":"crossref","first-page":"1554","DOI":"10.1136\/bmj.317.7172.1554","article-title":"Intrapartum risk factors for newborn encephalopathy: the Western Australian case-control study","volume":"317","author":"Badawi","year":"1998","journal-title":"BMJ"},{"key":"10.1016\/j.ajog.2017.07.025_bib52","doi-asserted-by":"crossref","first-page":"520","DOI":"10.1002\/uog.14785","article-title":"Influence of ultrasound determination of fetal head position on mode of delivery: a pragmatic randomized trial","volume":"46","author":"Popowski","year":"2015","journal-title":"Ultrasound Obstet Gynecol"},{"key":"10.1016\/j.ajog.2017.07.025_bib53","doi-asserted-by":"crossref","first-page":"1985","DOI":"10.3109\/14767058.2014.974539","article-title":"Sonographic assessment of fetal occiput position during the second stage of labor: how reliable is the transperineal approach?","volume":"28","author":"Ghi","year":"2015","journal-title":"J\u00a0Matern Fetal Neonatal Med"},{"key":"10.1016\/j.ajog.2017.07.025_bib54","first-page":"CD009298","article-title":"Prophylactic manual rotation for fetal malposition to reduce operative delivery","volume":"12","author":"Phipps","year":"2014","journal-title":"Cochrane Database Syst Rev"},{"key":"10.1016\/j.ajog.2017.07.025_bib55","doi-asserted-by":"crossref","first-page":"65","DOI":"10.3109\/14767051003710276","article-title":"Manual rotation to reduce cesarean delivery in persistent occiput posterior or transverse position","volume":"24","author":"Shaffer","year":"2011","journal-title":"J\u00a0Matern Fetal Neonatal Med"},{"key":"10.1016\/j.ajog.2017.07.025_bib56","doi-asserted-by":"crossref","first-page":"e7","DOI":"10.1016\/j.ajog.2006.01.029","article-title":"Manual rotation of the fetal occiput: predictors of success and delivery","volume":"194","author":"Shaffer","year":"2006","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ajog.2017.07.025_bib57","first-page":"CD001063","article-title":"Hands and knees posture in late pregnancy or labor for fetal malposition (lateral or posterior)","volume":"4","author":"Hunter","year":"2007","journal-title":"Cochrane Database Syst Rev"},{"key":"10.1016\/j.ajog.2017.07.025_bib58","doi-asserted-by":"crossref","first-page":"511.e1","DOI":"10.1016\/j.ajog.2016.05.033","article-title":"Lateral asymmetric decubitus position for the rotation of occipito-posterior positions: multicenter randomized controlled trial EVADELA","volume":"215","author":"Le Ray","year":"2016","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ajog.2017.07.025_bib59","doi-asserted-by":"crossref","first-page":"25","DOI":"10.1016\/j.ejogrb.2006.12.025","article-title":"Digital rotation from occipito-posterior to occipito-anterior decreases the need for cesarean section","volume":"136","author":"Reichman","year":"2008","journal-title":"Eur J Obstet Gynecol Reprod Biol"},{"key":"10.1016\/j.ajog.2017.07.025_bib60","doi-asserted-by":"crossref","first-page":"362","DOI":"10.1186\/s13063-015-0854-3","article-title":"Transverse occiput position: using manual rotation to aid normal birth and improve delivery outcomes (TURN-OUT): a study protocol for a randomized controlled trial","volume":"16","author":"de Vries","year":"2015","journal-title":"Trials"},{"key":"10.1016\/j.ajog.2017.07.025_bib61","doi-asserted-by":"crossref","first-page":"96","DOI":"10.1186\/s13063-015-0603-7","article-title":"Persistent occiput posterior position\u2013outcomes following manual rotation (POP-OUT): study protocol for a randomized controlled trial","volume":"16","author":"Phipps","year":"2015","journal-title":"Trials"},{"key":"10.1016\/j.ajog.2017.07.025_bib62","doi-asserted-by":"crossref","DOI":"10.1002\/jcu.22477","article-title":"Sonographic evaluation of the fetal spine position and success rate of manual rotation of the fetus in occiput posterior position: a randomized controlled trial","author":"Masturzo","year":"2017","journal-title":"J\u00a0Clin Ultrasound"},{"key":"10.1016\/j.ajog.2017.07.025_bib63","doi-asserted-by":"crossref","first-page":"1342","DOI":"10.1111\/j.1600-0412.2012.01515.x","article-title":"Prophylactic attempt at manual rotation in brow presentation at full dilatation","volume":"91","author":"Verspyck","year":"2012","journal-title":"Acta Obstet Gynecol Scand"},{"key":"10.1016\/j.ajog.2017.07.025_bib64","doi-asserted-by":"crossref","first-page":"193","DOI":"10.1016\/j.ejogrb.2005.04.009","article-title":"Fetal head position during the second stage of labor: comparison of digital vaginal examination and transabdominal ultrasonographic examination","volume":"123","author":"Dupuis","year":"2005","journal-title":"Eur J Obstet Gynecol Reprod Biol"},{"key":"10.1016\/j.ajog.2017.07.025_bib65","doi-asserted-by":"crossref","first-page":"332","DOI":"10.1002\/uog.5267","article-title":"Comparison of the learning curves of digital examination and transabdominal sonography for the determination of fetal head position during labor","volume":"31","author":"Rozenberg","year":"2008","journal-title":"Ultrasound Obstet Gynecol"},{"key":"10.1016\/j.ajog.2017.07.025_bib66","first-page":"1","article-title":"Can the intrapartum ultrasonography reduce the legal liability in distocic labor and delivery?","author":"Malvasi","year":"2017","journal-title":"J\u00a0Matern Fetal Neonatal Med"},{"key":"10.1016\/j.ajog.2017.07.025_bib67","doi-asserted-by":"crossref","first-page":"362.e1","DOI":"10.1016\/j.ajog.2015.05.044","article-title":"A\u00a0model to predict vaginal delivery in nulliparous women based on maternal characteristics and intrapartum ultrasound","volume":"213","author":"Eggebo","year":"2015","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ajog.2017.07.025_bib68","doi-asserted-by":"crossref","first-page":"507.e1","DOI":"10.1016\/j.ajog.2017.01.007","article-title":"Predicting the difficulty of operative vaginal delivery by ultrasound measurement of fetal head station","volume":"216","author":"Kasbaoui","year":"2017","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ajog.2017.07.025_bib69","doi-asserted-by":"crossref","first-page":"523","DOI":"10.1002\/uog.15874","article-title":"Knowledge, understanding and fetal occiput position","volume":"47","author":"Youssef","year":"2016","journal-title":"Ultrasound Obstet Gynecol"}],"container-title":["American Journal of Obstetrics and Gynecology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0002937817308694?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0002937817308694?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2025,9,11]],"date-time":"2025-09-11T11:17:22Z","timestamp":1757589442000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/S0002937817308694"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2017,12]]},"references-count":69,"journal-issue":{"issue":"6","published-print":{"date-parts":[[2017,12]]}},"alternative-id":["S0002937817308694"],"URL":"https:\/\/doi.org\/10.1016\/j.ajog.2017.07.025","relation":{},"ISSN":["0002-9378"],"issn-type":[{"value":"0002-9378","type":"print"}],"subject":[],"published":{"date-parts":[[2017,12]]},"assertion":[{"value":"Elsevier","name":"publisher","label":"This article is maintained by"},{"value":"The use of intrapartum ultrasound to diagnose malpositions and cephalic malpresentations","name":"articletitle","label":"Article Title"},{"value":"American Journal of Obstetrics and Gynecology","name":"journaltitle","label":"Journal Title"},{"value":"https:\/\/doi.org\/10.1016\/j.ajog.2017.07.025","name":"articlelink","label":"CrossRef DOI link to publisher maintained version"},{"value":"article","name":"content_type","label":"Content Type"},{"value":"\u00a9 2017 Elsevier Inc. All rights reserved.","name":"copyright","label":"Copyright"}]}}