{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,30]],"date-time":"2026-06-30T15:30:46Z","timestamp":1782833446298,"version":"3.54.5"},"reference-count":9,"publisher":"Wiley","issue":"8","license":[{"start":{"date-parts":[[2012,5,21]],"date-time":"2012-05-21T00:00:00Z","timestamp":1337558400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J of Obstet and Gynaecol"],"published-print":{"date-parts":[[2012,8]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p><jats:bold>Aim:\u2002<\/jats:bold> The aim of the present study was to investigate whether amount of hemorrhage during a vaginal delivery associates with the cervical length, length from the placental edge to the os and the sum of the two in cases with a low\u2010lying placenta.<\/jats:p><jats:p><jats:bold>Material and Methods:\u2002<\/jats:bold> A retrospective study was performed on cases with low\u2010lying placenta diagnosed at 35\u201336\u2003weeks of gestation based on a distance of 1\u20132\u2003cm from the lower placental edge to the internal os, and subject to the trial of labor. The total amount of intrapartum hemorrhage in association with the distance from the placental lowest edge to the internal os (placenta\u2013internal os distance, A); cervical length, B; and sum of the two (placenta\u2013external os distance; A\u2003+\u2003B) were reviewed from our medical records.<\/jats:p><jats:p><jats:bold>Results:\u2002<\/jats:bold> Twenty\u2010three cases of low\u2010lying placenta that underwent trial of labor were analyzed. Twenty (87%) of 23 patients with low\u2010lying placenta delivered transvaginally and patients underwent emergency cesarean section due to intrapartum bleeding. The length from the placental edge to the external os (length from placental edge to internal os\u2003+\u2003cervical length) was correlated significantly with the total amount of hemorrhage during delivery (r\u2003=\u2003\u22120.598, <jats:italic>P<\/jats:italic>\u2003=\u20030.004), though neither the length from the placental edge to the internal os nor the cervical lengths correlated with it.<\/jats:p><jats:p><jats:bold>Conclusion:\u2002<\/jats:bold> Our results suggest that the length from the placental lowest edge to the external os negatively correlated with the amount of hemorrhage during vaginal delivery, but did not correlate with cervical length and distance from the placental edge to the internal os.<\/jats:p>","DOI":"10.1111\/j.1447-0756.2011.01776.x","type":"journal-article","created":{"date-parts":[[2012,5,22]],"date-time":"2012-05-22T03:12:58Z","timestamp":1337656378000},"page":"1041-1045","source":"Crossref","is-referenced-by-count":12,"title":["Amount of hemorrhage during vaginal delivery correlates with length from placental edge to external os in cases with low\u2010lying placenta whose length between placental edge and internal os was 1\u20132\u2003cm"],"prefix":"10.1111","volume":"38","author":[{"given":"Masamitsu","family":"Nakamura","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Junichi","family":"Hasegawa","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ryu","family":"Matsuaka","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Takashi","family":"Mimura","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kiyotake","family":"Ichizuka","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Akihiko","family":"Sekizawa","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Takashi","family":"Okai","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2012,5,21]]},"reference":[{"key":"e_1_2_6_2_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.ogc.2007.06.007"},{"key":"e_1_2_6_3_2","doi-asserted-by":"publisher","DOI":"10.1097\/00006254-194810000-00003"},{"key":"e_1_2_6_4_2","doi-asserted-by":"publisher","DOI":"10.1111\/j.1471-0528.2003.02491.x"},{"key":"e_1_2_6_5_2","doi-asserted-by":"publisher","DOI":"10.1097\/01.AOG.0000207559.15715.98"},{"key":"e_1_2_6_6_2","doi-asserted-by":"publisher","DOI":"10.1002\/uog.6304"},{"key":"e_1_2_6_7_2","doi-asserted-by":"publisher","DOI":"10.1046\/j.1469-0705.2001.00450.x"},{"key":"e_1_2_6_8_2","doi-asserted-by":"publisher","DOI":"10.1046\/j.1469-0705.2001.00437.x"},{"key":"e_1_2_6_9_2","doi-asserted-by":"publisher","DOI":"10.1515\/JPM.2008.089"},{"key":"e_1_2_6_10_2","doi-asserted-by":"publisher","DOI":"10.1016\/0002-9378(91)90465-4"}],"container-title":["Journal of Obstetrics and Gynaecology Research"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1111%2Fj.1447-0756.2011.01776.x","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/obgyn.onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/j.1447-0756.2011.01776.x","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,10,15]],"date-time":"2023-10-15T00:22:15Z","timestamp":1697329335000},"score":1,"resource":{"primary":{"URL":"https:\/\/obgyn.onlinelibrary.wiley.com\/doi\/10.1111\/j.1447-0756.2011.01776.x"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2012,5,21]]},"references-count":9,"journal-issue":{"issue":"8","published-print":{"date-parts":[[2012,8]]}},"alternative-id":["10.1111\/j.1447-0756.2011.01776.x"],"URL":"https:\/\/doi.org\/10.1111\/j.1447-0756.2011.01776.x","archive":["Portico"],"relation":{},"ISSN":["1341-8076","1447-0756"],"issn-type":[{"value":"1341-8076","type":"print"},{"value":"1447-0756","type":"electronic"}],"subject":[],"published":{"date-parts":[[2012,5,21]]}}}