{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,31]],"date-time":"2026-08-31T21:13:03Z","timestamp":1788210783044,"version":"build-2803163510"},"reference-count":30,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2017,8,29]],"date-time":"2017-08-29T00:00:00Z","timestamp":1503964800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["J of Ultrasound Medicine"],"published-print":{"date-parts":[[2018,3]]},"abstract":"<jats:sec><jats:title>Objectives<\/jats:title><jats:p>To determine the effect, if any, of an increasing maternal body mass index (BMI) on sonographically diagnosed oligohydramnios in late gestation and how it subsequently affects obstetric and neonatal outcomes.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>This retrospective cohort study evaluated all women with singleton gestations who had a sonographic examination at 40 to 42 weeks' gestational age at North Shore University Hospital from 2010 through 2013. Underweight women (prepregnancy BMI\u2009&lt;\u200918.5\u2009kg\/m<jats:sup>2<\/jats:sup>) were excluded because of higher rates of oligohydramnios and fetal growth restriction. Patients were classified into 5 groups by late\u2010pregnancy BMI. The primary variable of interest was the diagnosis of oligohydramnios (amniotic fluid index\u2009&lt;\u20095\u2009cm). Secondary variables of interest included the mode of delivery and indication for primary cesarean delivery. A multivariable logistic regression analysis was performed.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Oligohydramnios was identified in 189 of 1671 patients (11.3%). There was no significant difference in the amniotic fluid index between BMI groups. The rate of primary cesarean delivery increased with each successive BMI group (<jats:italic>P<\/jats:italic>\u2009&lt;\u2009.001) such that women in the class III obesity group had an approximately 3\u2010fold higher rate of primary cesarean delivery than women in the normal BMI group and a 2\u2010fold higher rate than women in the overweight BMI group. In the final multivariable logistic regression model, a high BMI, nulliparity, and excessive gestational weight gain were associated with primary cesarean delivery. However, oligohydramnios did not contribute significantly to the model.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>The maternal BMI is not associated with oligohydramnios in late gestation. An increasing maternal BMI significantly increases the risk of primary cesarean delivery.<\/jats:p><\/jats:sec>","DOI":"10.1002\/jum.14362","type":"journal-article","created":{"date-parts":[[2017,8,29]],"date-time":"2017-08-29T15:34:35Z","timestamp":1504020875000},"page":"561-568","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["Maternal Body Mass Index and Amniotic Fluid Index in Late Gestation"],"prefix":"10.1002","volume":"37","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5534-6928","authenticated-orcid":false,"given":"Matthew J.","family":"Blitz","sequence":"first","affiliation":[{"name":"Divisions of Maternal\u2010Fetal Medicine"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Burton","family":"Rochelson","sequence":"additional","affiliation":[{"name":"Divisions of Maternal\u2010Fetal Medicine"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Leah B.","family":"Stork","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Stephanie","family":"Augustine","sequence":"additional","affiliation":[{"name":"Divisions of Maternal\u2010Fetal Medicine"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Meir","family":"Greenberg","sequence":"additional","affiliation":[{"name":"Medical Informatics"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Cristina P.","family":"Sison","sequence":"additional","affiliation":[{"name":"Biostatistics Unit, Feinstein Institute for Medical Research Hofstra Northwell School of Medicine, North Shore University Hospital Manhasset New York USA"},{"name":"Department of Molecular Medicine Hofstra Northwell School of Medicine Hempstead New York USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nidhi","family":"Vohra","sequence":"additional","affiliation":[{"name":"Divisions of Maternal\u2010Fetal Medicine"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2017,8,29]]},"reference":[{"key":"e_1_2_6_2_1","first-page":"339","article-title":"Maternal obesity: a potential source of error in sonographic prenatal diagnosis","volume":"76","author":"Wolfe HM","year":"1990","journal-title":"Obstet Gynecol"},{"key":"e_1_2_6_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/0002-9378(90)90687-3"},{"key":"e_1_2_6_4_1","doi-asserted-by":"publisher","DOI":"10.1097\/AOG.0b013e3181998eef"},{"key":"e_1_2_6_5_1","doi-asserted-by":"publisher","DOI":"10.7863\/ultra.33.12.2173"},{"key":"e_1_2_6_6_1","doi-asserted-by":"publisher","DOI":"10.1097\/AOG.0b013e3181a1d2f5"},{"key":"e_1_2_6_7_1","doi-asserted-by":"publisher","DOI":"10.1002\/pd.2399"},{"key":"e_1_2_6_8_1","doi-asserted-by":"publisher","DOI":"10.3109\/14767050903551491"},{"key":"e_1_2_6_9_1","doi-asserted-by":"publisher","DOI":"10.1016\/0002-9378(89)90527-9"},{"key":"e_1_2_6_10_1","first-page":"290875","article-title":"The association between isolated oligohydramnios at term and pregnancy outcome","author":"Ashwal E","year":"2014","journal-title":"Arch Gynecol Obstet"},{"key":"e_1_2_6_11_1","first-page":"CD006593","article-title":"Amniotic fluid index versus single deepest vertical pocket as a screening test for preventing adverse pregnancy outcome","volume":"3","author":"Nabhan AF","year":"2008","journal-title":"Cochrane Database Syst Rev"},{"key":"e_1_2_6_12_1","doi-asserted-by":"crossref","first-page":"129","DOI":"10.1080\/jmf.17.2.129.132","article-title":"Induction of labor in women with oligohydramnios","volume":"17","author":"Venturini P","year":"2005","journal-title":"J Matern Fetal Neonatal Med"},{"key":"e_1_2_6_13_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00404-003-0525-6"},{"key":"e_1_2_6_14_1","doi-asserted-by":"publisher","DOI":"10.1186\/1471-2393-14-249"},{"key":"e_1_2_6_15_1","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pone.0080410"},{"key":"e_1_2_6_16_1","first-page":"i","volume-title":"Obesity: Preventing and Managing the Global Epidemic. 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