{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,5,14]],"date-time":"2025-05-14T01:36:54Z","timestamp":1747186614642,"version":"3.40.5"},"reference-count":25,"publisher":"Wiley","issue":"8","license":[{"start":{"date-parts":[[2024,5,22]],"date-time":"2024-05-22T00:00:00Z","timestamp":1716336000000},"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":["J of Obstet and Gynaecol"],"published-print":{"date-parts":[[2024,8]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Objective<\/jats:title><jats:p>This study aimed to examine maternal and neonatal factors in cesarean deliveries due to dystocia, including cephalopelvic disproportion, latent\u2010phase prolongation, and fetal malposition or malpresentation. Additionally, we sought to compare the differences between the dystocia subgroups.<\/jats:p><\/jats:sec><jats:sec><jats:title>Method and Materials<\/jats:title><jats:p>This retrospective case\u2013control study included women who delivered between January 2010 and June 2021 after 37\u2009weeks of pregnancy and underwent abdominal\u2010pelvic CT scans within 5\u2009years before and after delivery. Neonatal factors were extracted from medical charts immediately after delivery.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Among the 292 women studied, those with cesarean deliveries for dystocia were older (mean\u2009\u00b1\u2009SD, 34.2\u2009\u00b1\u20094.27 vs. 32.2\u2009\u00b1\u20093.8, <jats:italic>p<\/jats:italic>\u2010value\u2009=\u20090.002), had higher pre\u2010pregnancy BMI (22.7\u2009\u00b1\u20093.67 vs. 21.4\u2009\u00b1\u20093.48, <jats:italic>p<\/jats:italic>\u2010value\u2009=\u20090.012) and term\u2010BMI (27.4\u2009\u00b1\u20093.72 vs. 25.9\u2009\u00b1\u20093.66, <jats:italic>p<\/jats:italic>\u2010value\u2009=\u20090.010), shorter interspinous distance (ISD, the distance between ischial spine) (10.8\u2009\u00b1\u20090.76 vs. 11.2\u2009\u00b1\u20090.85\u2009cm, <jats:italic>p<\/jats:italic>\u2010value\u2009=\u20090.003), and longer head circumference (HC) (35\u2009\u00b1\u20091.47 vs. 34.4\u2009\u00b1\u20091.36\u2009cm, <jats:italic>p<\/jats:italic>\u2010value\u2009=\u20090.003) compared to those who had vaginal deliveries. Univariate logistic regression for dystocia revealed associations between HC\/maternal height and HC\/ISD ratios (OR, 2.02 [95% confidence interval, CI, 1.4\u2009~\u20092.92], 12.13 [3.2\u2009~\u200946.04], respectively). Multivariate logistic analysis indicated that maternal age, ISD, and HC were significant factors for dystocia (OR, 1.11 [95% CI, 1.01\u2009~\u20091.21], 0.49 [0.26\u2009~\u20090.91], 1.53 [1.07\u2009~\u20092.19], respectively). The subgroup with latent\u2010phase prolongation exhibited the lowest birthweight\/term\u2010BMI ratio (124\u2009\u00b1\u200918.8 vs. 113\u2009\u00b1\u200910.3 vs. 134\u2009\u00b1\u200919.1, <jats:italic>p<\/jats:italic>\u2010value\u2009=\u20090.013).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>The HC\/ISD ratio emerged as a crucial predictor of dystocia, suggesting that reducing term\u2010BMI could potentially mitigate latent\u2010phase prolongation. Further research assessing the maternal mid\u2010pelvis during pregnancy and labor is warranted, along with efforts to reduce BMI during pregnancy.<\/jats:p><\/jats:sec>","DOI":"10.1111\/jog.15974","type":"journal-article","created":{"date-parts":[[2024,5,22]],"date-time":"2024-05-22T23:32:12Z","timestamp":1716420732000},"page":"1383-1391","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Neonatal head circumference to maternal <scp>mid\u2010transverse<\/scp> pelvic distance ratio as a key anatomical predictor for dystocia: Retrospective case\u2013control study"],"prefix":"10.1111","volume":"50","author":[{"given":"Min Jung","family":"Baek","sequence":"first","affiliation":[{"name":"Department of Obstetrics and Gynecology, CHA Bundang Medical Center CHA University  Seongnam Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Eun Duc","family":"Na","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, CHA Bundang Medical Center CHA University  Seongnam Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hanna","family":"Lee","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, CHA Bundang Medical Center CHA University  Seongnam Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"So Hyeon","family":"Park","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, CHA Bundang Medical Center CHA University  Seongnam Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Seoyeon","family":"Kim","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, CHA Bundang Medical Center CHA University  Seongnam 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