{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,7]],"date-time":"2026-05-07T11:18:42Z","timestamp":1778152722597,"version":"3.51.4"},"reference-count":27,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2014,11,3]],"date-time":"2014-11-03T00:00:00Z","timestamp":1414972800000},"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":[[2015,4]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Aim<\/jats:title><jats:p>Intermittent assessment of renal artery flow velocity waveforms during the early stages of pregnancy may help in predicting changes in amniotic fluid dynamics. The current study sought to determine the relation of renal artery and umbilical artery flow velocity waveforms with normal pregnancies and pregnancies complicated by either polyhydramnios or oligohydramnios.<\/jats:p><\/jats:sec><jats:sec><jats:title>Material and Methods<\/jats:title><jats:p>Renal and umbilical artery <jats:styled-content style=\"fixed-case\">D<\/jats:styled-content>oppler values were evaluated at 22, 28 and 34 weeks' gestation in 300 low\u2010risk pregnant women with singleton pregnancies. Pulsatility index (<jats:styled-content style=\"fixed-case\">PI<\/jats:styled-content>) and resistance index (<jats:styled-content style=\"fixed-case\">RI<\/jats:styled-content>) were recorded and the amniotic fluid volume was evaluated. Three groups were formed according to the amniotic fluid volume at birth. Group <jats:styled-content style=\"fixed-case\">I<\/jats:styled-content> consisted of 264 pregnant women with normal amniotic fluid, group <jats:styled-content style=\"fixed-case\">II<\/jats:styled-content> included 30 pregnant women with oligohydramnios and group <jats:styled-content style=\"fixed-case\">III<\/jats:styled-content> included six pregnant women with polyhydramnios. Doppler parameters were compared between the groups and within each group according to gestational age.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Renal artery <jats:styled-content style=\"fixed-case\">PI<\/jats:styled-content> values were higher in group <jats:styled-content style=\"fixed-case\">II<\/jats:styled-content> than group <jats:styled-content style=\"fixed-case\">I<\/jats:styled-content> at 22 weeks, 28 weeks and 34 weeks. The <jats:styled-content style=\"fixed-case\">PI<\/jats:styled-content> value at 28 weeks' gestation was statistically significant (<jats:italic>P<\/jats:italic>\u2009=\u20090.011). At 28 weeks' gestation, group <jats:styled-content style=\"fixed-case\">II<\/jats:styled-content> also had higher umbilical artery <jats:styled-content style=\"fixed-case\">PI<\/jats:styled-content> and <jats:styled-content style=\"fixed-case\">RI<\/jats:styled-content> values than group <jats:styled-content style=\"fixed-case\">I<\/jats:styled-content>.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>An increase in renal artery <jats:styled-content style=\"fixed-case\">PI<\/jats:styled-content> develops in early pregnancy before the development of oligohydramnios. In pregnancies developing polyhydramnios, renal artery <jats:styled-content style=\"fixed-case\">PI<\/jats:styled-content> was lower; however, our study included a small number of women with polyhydramnios.<\/jats:p><\/jats:sec>","DOI":"10.1111\/jog.12601","type":"journal-article","created":{"date-parts":[[2014,11,3]],"date-time":"2014-11-03T08:27:40Z","timestamp":1415003260000},"page":"523-528","source":"Crossref","is-referenced-by-count":10,"title":["Predictive value of second and third trimester fetal renal artery <scp>D<\/scp>oppler indices in idiopathic oligohydramnios and polyhydramnios in low\u2010risk pregnancies: A longitudinal study"],"prefix":"10.1111","volume":"41","author":[{"given":"Nilg\u00fcn","family":"Benzer","sequence":"first","affiliation":[{"name":"Department of Obstetrics and Gynecology Faculty of Medicine Sel\u00e7uk University  Konya Turkey"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Aybike","family":"Tazeg\u00fcl Pekin","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology Faculty of Medicine Sel\u00e7uk University  Konya Turkey"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Setenay Arzu","family":"Y\u0131lmaz","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology Faculty of Medicine Sel\u00e7uk University  Konya Turkey"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"\u00d6zlem","family":"Se\u00e7ilmi\u015f Kerimo\u011flu","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology Faculty of Medicine Sel\u00e7uk University  Konya Turkey"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nasuh Utku","family":"Do\u011fan","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology Faculty of Medicine Akdeniz University  Antalya Turkey"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"\u00c7etin","family":"\u00c7elik","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology Faculty of Medicine Sel\u00e7uk University  Konya Turkey"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2014,11,3]]},"reference":[{"key":"e_1_2_6_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/0002-9378(92)91734-R"},{"key":"e_1_2_6_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0002-9378(12)80025-1"},{"key":"e_1_2_6_4_1","doi-asserted-by":"publisher","DOI":"10.1016\/0002-9378(90)90009-V"},{"key":"e_1_2_6_5_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1447-0756.2011.01710.x"},{"key":"e_1_2_6_6_1","doi-asserted-by":"publisher","DOI":"10.1097\/AOG.0b013e3181ee9fa3"},{"key":"e_1_2_6_7_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ejogrb.2013.03.011"},{"key":"e_1_2_6_8_1","first-page":"719","article-title":"Intrapartum amniotic fluid volume at term. 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