{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,13]],"date-time":"2025-11-13T07:09:48Z","timestamp":1763017788684},"reference-count":44,"publisher":"Walter de Gruyter GmbH","issue":"1","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2018,1,26]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:sec id=\"j_jpm-2016-0284_s_999_w2aab3b7c28b1b6b1aab1c16b1Aa\">\n                  <jats:title>Aims:<\/jats:title>\n                  <jats:p>To assess cervical dilation rates of nulliparous and multiparous women in the active first stage of labor and to evaluate significant impact factors.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec id=\"j_jpm-2016-0284_s_998_w2aab3b7c28b1b6b1aab1c16b2Aa\">\n                  <jats:title>Methods:<\/jats:title>\n                  <jats:p>In a retrospective cohort study between January 2007 and July 2014 at the University Hospital of Zurich in Switzerland, we analyzed 8378 women with singleton pregnancies in vertex presentation with a vaginal delivery at 34+0 to 42+5 gestational weeks. Median cervical dilation rates were calculated and different impact factors evaluated.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec id=\"j_jpm-2016-0284_s_997_w2aab3b7c28b1b6b1aab1c16b3Aa\">\n                  <jats:title>Results:<\/jats:title>\n                  <jats:p>Cervical dilation rates increase during labor progress with faster rates in multiparous compared with nulliparous women (P&lt;0.001). Dilation rates exceed 1 cm\/h at a dilatation of 6\u20137 cm, but are very individual. Accelerating impact factors are multiparity, a greater amount of cervical dilation and fetal occipitoanterior position, whereas the use of epidural anesthesia, a higher fetal weight and head circumference decelerate dilation (P&lt;0.001).<\/jats:p>\n               <\/jats:sec>\n               <jats:sec id=\"j_jpm-2016-0284_s_996_w2aab3b7c28b1b6b1aab1c16b4Aa\">\n                  <jats:title>Conclusion:<\/jats:title>\n                  <jats:p>Cervical dilation is a hyperbolic increasing process, with faster dilation rates in multiparous compared to nulliparous women and a reversal point of labor around 6\u20137 cm, respectively. Besides, cervical dilation is highly individual and affected by several impact factors. The diagnosis of labor arrest or prolonged labor should therefore be based on such rates and on the individual evaluation of every woman.<\/jats:p>\n               <\/jats:sec>","DOI":"10.1515\/jpm-2016-0284","type":"journal-article","created":{"date-parts":[[2017,7,8]],"date-time":"2017-07-08T10:01:27Z","timestamp":1499508087000},"page":"59-66","source":"Crossref","is-referenced-by-count":9,"title":["Impact factors on cervical dilation rates in the first stage of labor"],"prefix":"10.1515","volume":"46","author":[{"given":"Jana","family":"Juhasova","sequence":"first","affiliation":[{"name":"Department of Obstetrics , University Hospital of Zurich , Frauenklinikstrasse 10 , 8091 Zurich , Switzerland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Martina","family":"Kreft","sequence":"additional","affiliation":[{"name":"Department of Obstetrics , University Hospital of Zurich , Frauenklinikstrasse 10 , 8091 Zurich , Switzerland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Roland","family":"Zimmermann","sequence":"additional","affiliation":[{"name":"Head of Department of Obstetrics , University Hospital of Zurich , Frauenklinikstrasse 10 , 8091 Zurich , Switzerland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nina","family":"Kimmich","sequence":"additional","affiliation":[{"name":"Division of Obstetrics , University Hospital of Zurich , Frauenklinikstrasse 10 , 8091 Zurich , Switzerland"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"374","published-online":{"date-parts":[[2017,7,8]]},"reference":[{"key":"2023033122245922730_j_jpm-2016-0284_ref_001_w2aab3b7c28b1b6b1ab2b1b1Aa","doi-asserted-by":"crossref","unstructured":"American College of Obstetricians and Gynecologists, Society for Maternal-Fetal Medicine, Caughey AB, Cahill AG, Guise JM. 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