{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,31]],"date-time":"2026-01-31T16:41:18Z","timestamp":1769877678801,"version":"3.49.0"},"reference-count":31,"publisher":"Wiley","issue":"4","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:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["obgyn.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Ultrasound in Obstet &amp;amp; Gyne"],"published-print":{"date-parts":[[2021,4]]},"abstract":"<jats:title>ABSTRACT<\/jats:title><jats:sec><jats:title>Objective<\/jats:title><jats:p>To assess, according to chorionicity, the perinatal outcome of twin pregnancy in which vaginal delivery is planned.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>JUMODA (JUmeaux MODe d'Accouchement) was a national prospective population\u2010based cohort study of twin pregnancies, delivered in 176 maternity units in France, from February 2014 to March 2015. In this planned secondary analysis, we assessed, according to chorionicity, the perinatal outcome of twin pregnancies, in which vaginal delivery was planned, that delivered at or after 32\u2009weeks of gestation with the first twin in cephalic presentation. In order to select a population with well\u2010recognized indications for planned vaginal delivery, we applied the same exclusion criteria as those in the Twin Birth Study, an international randomized trial. Monochorionic twin pregnancies with twin\u2010to\u2010twin transfusion syndrome or twin anemia\u2013polycythemia sequence were defined as complicated and were excluded. The primary outcome was a composite of intrapartum mortality and neonatal morbidity and mortality. Multivariable logistic regression models were used to control for potential confounders. Subgroup analyses were conducted according to birth order (first or second twin) and gestational age at delivery (&lt;\u200937 or \u2265\u200937\u2009weeks of gestation).<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Among 3873 twin pregnancies, in which vaginal delivery was planned, that delivered at \u2265\u200932\u2009weeks' gestation with the first twin in cephalic presentation, meeting the inclusion criteria of the Twin Birth Study, 729 (18.8%) were uncomplicated monochorionic twin pregnancies and 3144 (81.2%) were dichorionic twin pregnancies. The rate of composite intrapartum mortality and neonatal morbidity and mortality did not differ between uncomplicated monochorionic (27\/1458 (1.9%)) and dichorionic (107\/6288 (1.7%)) twin pregnancies when adjusting for conception by assisted reproductive technologies (adjusted relative risk, 1.07 (95%\u2009CI, 0.66\u20131.75)). No significant difference in the primary outcome was found between the groups on subgroup analyses according to birth order and gestational age at delivery.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>When vaginal delivery is planned, and delivery occurs at \u2265\u200932\u2009weeks of gestation with the first twin in cephalic presentation, uncomplicated monochorionic twin pregnancy is not associated with a higher rate of composite intrapartum mortality and neonatal morbidity and mortality compared with dichorionic twin pregnancy. \u00a9 2020 International Society of Ultrasound in Obstetrics and Gynecology<\/jats:p><\/jats:sec>","DOI":"10.1002\/uog.23518","type":"journal-article","created":{"date-parts":[[2020,10,20]],"date-time":"2020-10-20T05:38:23Z","timestamp":1603172303000},"page":"592-599","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":17,"title":["Perinatal outcome after planned vaginal delivery in monochorionic compared with dichorionic twin pregnancy"],"prefix":"10.1002","volume":"57","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-3921-5573","authenticated-orcid":false,"given":"T.","family":"Schmitz","sequence":"first","affiliation":[{"name":"Assistance Publique\u2010H\u00f4pitaux de Paris, H\u00f4pital Robert Debr\u00e9 Service de Gyn\u00e9cologie Obst\u00e9trique  Paris France"},{"name":"Universit\u00e9 de Paris Centre for Epidemiology and Statistics Sorbonne Paris Cit\u00e9 (CRESS), Obstetrical Perinatal and Pediatric Epidemiology Research Team, EPOP\u00e9, INSERM, INRA  Paris France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"D.","family":"Korb","sequence":"additional","affiliation":[{"name":"Assistance Publique\u2010H\u00f4pitaux de Paris, H\u00f4pital Robert Debr\u00e9 Service de Gyn\u00e9cologie Obst\u00e9trique  Paris France"},{"name":"Universit\u00e9 de Paris Centre for Epidemiology and Statistics Sorbonne Paris Cit\u00e9 (CRESS), Obstetrical Perinatal and Pediatric Epidemiology Research Team, EPOP\u00e9, INSERM, INRA  Paris France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"E.","family":"Azria","sequence":"additional","affiliation":[{"name":"Universit\u00e9 de Paris Centre for Epidemiology and Statistics Sorbonne Paris Cit\u00e9 (CRESS), Obstetrical Perinatal and Pediatric Epidemiology Research Team, EPOP\u00e9, INSERM, INRA  Paris France"},{"name":"Maternit\u00e9 Notre Dame de Bon Secours Groupe Hospitalier Saint\u2010Joseph  Paris France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"C.","family":"Garab\u00e9dian","sequence":"additional","affiliation":[{"name":"CHRU de Lille, Maternit\u00e9 Jeanne de Flandre  Lille France"},{"name":"Universit\u00e9 de Lille 2  Lille France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"P.","family":"Rozenberg","sequence":"additional","affiliation":[{"name":"Centre Hospitalier Intercommunal de Poissy Service de Gyn\u00e9cologie Obst\u00e9trique  Poissy France"},{"name":"Universit\u00e9 de Versailles Saint\u2010Quentin\u2010en\u2010Yvelines  Versailles France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"M. V.","family":"S\u00e9nat","sequence":"additional","affiliation":[{"name":"Assistance Publique\u2010H\u00f4pitaux de Paris, H\u00f4pital Bic\u00eatre Service de Gyn\u00e9cologie Obst\u00e9trique, Le Kremlin\u2010Bic\u00eatre  Paris France"},{"name":"Universit\u00e9 Paris Sud Le Kremlin\u2010Bic\u00eatre  Paris France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"L.","family":"Sentilhes","sequence":"additional","affiliation":[{"name":"CHU de Bordeaux Service de Gyn\u00e9cologie Obst\u00e9trique  Bordeaux France"},{"name":"Universit\u00e9 de Bordeaux  Bordeaux France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"C.","family":"Vayssi\u00e8re","sequence":"additional","affiliation":[{"name":"CHU de Toulouse Service de Gyn\u00e9cologie Obst\u00e9trique  Toulouse France"},{"name":"Universit\u00e9 Toulouse III Paul Sabatier  Toulouse France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9897-8493","authenticated-orcid":false,"given":"N.","family":"Winer","sequence":"additional","affiliation":[{"name":"CHU de Nantes Service de Gyn\u00e9cologie Obst\u00e9trique  Nantes France"},{"name":"Universit\u00e9 de Nantes  Nantes France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"F.","family":"Goffinet","sequence":"additional","affiliation":[{"name":"Universit\u00e9 de Paris Centre for Epidemiology and Statistics Sorbonne Paris Cit\u00e9 (CRESS), Obstetrical Perinatal and Pediatric Epidemiology Research Team, EPOP\u00e9, INSERM, INRA  Paris France"},{"name":"Assistance Publique\u2010H\u00f4pitaux de Paris Maternit\u00e9 Port\u2010Royal  Paris France"},{"name":"DHU Risques et Grossesse  Paris France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"name":"for the JUmeaux MODe d'Accouchement (JUMODA) Study Group and the Groupe de Recherche en Obst\u00e9trique et Gyn\u00e9cologie (GROG)","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2021,2,2]]},"reference":[{"key":"e_1_2_8_2_1","first-page":"1","article-title":"Final Data for 2016","volume":"67","author":"Martin JA","year":"2018","journal-title":"Natl Vital Stat Rep"},{"key":"e_1_2_8_3_1","unstructured":"Enqu\u00eate Nationale P\u00e9rinatale2016. 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