{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,12]],"date-time":"2025-11-12T03:30:17Z","timestamp":1762918217056,"version":"3.40.5"},"reference-count":27,"publisher":"Wiley","issue":"7","license":[{"start":{"date-parts":[[2021,2,2]],"date-time":"2021-02-02T00:00:00Z","timestamp":1612224000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"content-domain":{"domain":["obgyn.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Acta Obstet Gynecol Scand"],"published-print":{"date-parts":[[2021,7]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Introduction<\/jats:title><jats:p>There is limited evidence on the safety and outcome of induction of breech labor. In this study, we aimed to compare the outcomes of spontaneous and induced breech deliveries and to describe variations in induction rates.<\/jats:p><\/jats:sec><jats:sec><jats:title>Material and methods<\/jats:title><jats:p>This was a retrospective cohort study comprising 1054 singleton live fetuses in breech presentation at Trondheim University Hospital from 2012 to 2019. The main outcome was intrapartum cesarean section, and secondary outcomes were postpartum hemorrhage, anal sphincter ruptures, Apgar scores, pH in the umbilical artery, and metabolic acidosis. All data were obtained from the hospital birth journal.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Induction of labor was performed in 127\/606 (21.0%) women with planned vaginal birth. The frequency of intrapartum cesarean section was 48.0% for induced labor vs 45.7% for spontaneous labor (<jats:italic>P<\/jats:italic>\u00a0=\u00a0.64). We found no differences in the frequency of postpartum hemorrhage or anal sphincter ruptures between induced and spontaneous births. The median pH in the umbilical artery was significantly lower in neonates with induced labor compared with neonates with spontaneous labor (7.22 vs 7.25; <jats:italic>P<\/jats:italic>\u00a0=\u00a0.02). The frequency of pH &lt;7.05 was 7.0% for induced labor vs 2.9% (<jats:italic>P<\/jats:italic>\u00a0=\u00a0.05) for spontaneous labor, but the frequency of pH &lt;7.0 was not significantly different: 2.6% vs 0.8% (<jats:italic>P<\/jats:italic>\u00a0=\u00a0.14), respectively. Three neonates with planned vaginal birth had metabolic acidosis: two with spontaneous labors and one with induced labor. Three fetuses with planned vaginal birth died during labor: two with spontaneous onset of labor and one with induced labor. All three were extremely preterm: two were delivered in week 23 and one in week 25. We did not observe any significant trend in induction rates in either parous or nulliparous women.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>The induction rates were stable during the study period. We did not observe any significant difference in intrapartum cesarean section rates, in the frequency of pH &lt;7.0 in the umbilical artery, or in the frequency of metabolic acidosis when comparing induced and spontaneous breech deliveries.<\/jats:p><\/jats:sec>","DOI":"10.1111\/aogs.14083","type":"journal-article","created":{"date-parts":[[2021,1,15]],"date-time":"2021-01-15T03:20:55Z","timestamp":1610680855000},"page":"1336-1344","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["Induction of labor in breech presentations \u2010 a retrospective cohort study"],"prefix":"10.1111","volume":"100","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5159-3107","authenticated-orcid":false,"given":"Johanne Augusta Horn","family":"Welle\u2010Strand","sequence":"first","affiliation":[{"name":"Insitute of Clinical and Molecular Medicine Norwegian University of Science and Technology Trondheim Norway"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5225-0672","authenticated-orcid":false,"given":"Christian","family":"Tappert","sequence":"additional","affiliation":[{"name":"Department of Obstetrics Trondheim University Hospital St. Olavs Trondheim Norway"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3162-9595","authenticated-orcid":false,"given":"Torbj\u00f8rn Moe","family":"Eggeb\u00f8","sequence":"additional","affiliation":[{"name":"Insitute of Clinical and Molecular Medicine Norwegian University of Science and Technology Trondheim Norway"},{"name":"Center for Fetal Medicine Trondheim University Hospital St. Olavs Trondheim Norway"},{"name":"Department of Obstetrics and Gynecology Stavanger University Hospital Stavanger Norway"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2021,2,2]]},"reference":[{"doi-asserted-by":"publisher","key":"e_1_2_10_2_1","DOI":"10.1016\/0002-9378(92)91347-D"},{"doi-asserted-by":"publisher","key":"e_1_2_10_3_1","DOI":"10.1016\/S0140-6736(00)02840-3"},{"doi-asserted-by":"publisher","key":"e_1_2_10_4_1","DOI":"10.1016\/S1701-2163(16)31077-5"},{"doi-asserted-by":"publisher","key":"e_1_2_10_5_1","DOI":"10.1016\/j.ajog.2005.10.817"},{"unstructured":"\u00d8ianP AlbrechtsenS BergeL B\u00f8rdahlP.F\u00f8dsel av barn i seteleie til termin: assistert vaginal f\u00f8dsel eller keisersnitt? [Breech delivery at term: assisted vaginal birth or cesarean section?] (in Norwegian) SMM\u2010rapport nr. 3\/2003. Oslo: The Norwegian Knowledge Centre for the Health Services (NOKC)https:\/\/www.fhi.no\/globalassets\/dokumenterfiler\/rapporter\/2009\u2010og\u2010eldre\/smm\u2010rapporter\/smm\u2010rapport_03\u201003_foedsel_av_barn_\u2010i_seteleie_til_termin.pdf Accessed January 21. 2021","key":"e_1_2_10_6_1"},{"doi-asserted-by":"publisher","key":"e_1_2_10_7_1","DOI":"10.1136\/bmjopen-2016-014979"},{"unstructured":"Medical Birth Registry of Norway.The Norwegian Institute of Public Health.2020.http:\/\/statistikkbank.fhi.no\/mfr\/[Accessed May 2. 2020]","key":"e_1_2_10_8_1"},{"doi-asserted-by":"publisher","key":"e_1_2_10_9_1","DOI":"10.1111\/aogs.12043"},{"key":"e_1_2_10_10_1","article-title":"Induction of labour for improving birth outcomes for women at or beyond term","volume":"5","author":"Middleton P","year":"2018","journal-title":"Cochrane Database Syst Rev"},{"doi-asserted-by":"publisher","key":"e_1_2_10_11_1","DOI":"10.1111\/1471-0528.13682"},{"doi-asserted-by":"publisher","key":"e_1_2_10_12_1","DOI":"10.1016\/j.ejogrb.2017.12.031"},{"doi-asserted-by":"publisher","key":"e_1_2_10_13_1","DOI":"10.1111\/aogs.13557"},{"doi-asserted-by":"publisher","key":"e_1_2_10_14_1","DOI":"10.1016\/j.ajog.2012.03.029"},{"doi-asserted-by":"publisher","key":"e_1_2_10_15_1","DOI":"10.1034\/j.1600-0412.2002.810612.x"},{"doi-asserted-by":"publisher","key":"e_1_2_10_16_1","DOI":"10.1111\/1471-0528.13524"},{"doi-asserted-by":"publisher","key":"e_1_2_10_17_1","DOI":"10.1186\/1471-2393-13-153"},{"doi-asserted-by":"publisher","key":"e_1_2_10_18_1","DOI":"10.1111\/aogs.12449"},{"doi-asserted-by":"publisher","key":"e_1_2_10_19_1","DOI":"10.1111\/1471-0528.14465"},{"doi-asserted-by":"publisher","key":"e_1_2_10_20_1","DOI":"10.1016\/j.jogc.2018.12.018"},{"key":"e_1_2_10_21_1","first-page":"63","article-title":"Pr\u00e9sentation du si\u00e8ge. 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