Pulse wave Doppler ultrasound of umbilical cord in experimentally induced pregnancy toxemia in sheep

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dc.authoridTURK, SEFER/0000-0003-4683-5217
dc.authoridKIVRAK, MEHMET BUGRA/0000-0002-4772-874X
dc.contributor.authorKivrak, Mehmet Bugra
dc.contributor.authorTurk, Sefer
dc.contributor.authorTakci, Abdurrahman
dc.contributor.authorBolukbas, Bora
dc.contributor.authorAgaoglu, Recep Taha
dc.contributor.authorCoskun, Alparslan
dc.date.accessioned2025-05-04T16:47:01Z
dc.date.available2025-05-04T16:47:01Z
dc.date.issued2023
dc.departmentSivas Cumhuriyet Üniversitesi
dc.description.abstractContrary to its widespread use in human cases, the use of Doppler ultrasonography is only recently becoming prevalent in farm animals. This study aimed to determine the effects of maternal metabolic and clinical changes on fetal hemodynamics during pregnancy toxemia with the doppler examination of umbilical cord. In the study twenty ewes with a single healthy fetus were included in the study. At the end of the 120th day of pregnancy, 20 single-bearing pregnant ewes were randomly categorized into two groups. Ewes in the control group were fed to meet all nutritional requirements. On the other contrary, the experimental ewes were fed to meet equivalent to 50 % of the daily needs and then fasted for 96 h. Doppler ultrasonographic examinations of umbilical cord were performed once every two days and once a day during fasting. Beta hydroxybutyric acid (BHBA) concentration was measured by taking blood from sheep on examination days. Pulse systolic velocity (PSV), end diastolic velocity (EDV), PSV/EDV, pulsatility index (PI), resistance index (RI), and fetal heart rate (FHR) as well as BHBA values and how those parameters has changed over time (time by treatment effect) due to energy deprivation during pregnancy were evaluated using repeated measure analysis of variance. No clinical signs were observed in both toxemia and control groups during restricted feeding. BHBA concentration increased and there was a significant time, time by treatment and main effect of treatment effect between groups. No significant main effect of treatment and time by treatment interaction was observed in the changes of PI, RI, FHR, and systolic/diastolic velocity values over time in both groups. FHR was reduced over time, and there was a significant time effect in FHR in both groups. Although doppler indices didn't increase, both PSV and EDV values increased significantly in the pregnancy toxemia group compared with the controls (Time P = 0.03, time by treatment interaction P < 0.05) and the main effect of treatment P < 0.05). The marked increase in blood velocities (PSV and EDV) in the umbilical cord is probably due to the compensatory functioning for excessive energy deprivation of the fetus. Therefore, PSV and EDV might be a valuable indicator for evaluating the fetus's health status during the management of the PT.
dc.description.sponsorshipCoordination Unit of Scientific Research Projects, Sivas Cumhuriyet University, Sivas, Tuerkiye [V-108]
dc.description.sponsorshipThis study was supported by The Coordination Unit of Scientific Research Projects, Sivas Cumhuriyet University, Sivas, Tuerkiye (Project No. V-108).
dc.identifier.doi10.1016/j.rvsc.2023.05.004
dc.identifier.endpage25
dc.identifier.issn0034-5288
dc.identifier.issn1532-2661
dc.identifier.pmid37235922
dc.identifier.scopus2-s2.0-85160439618
dc.identifier.scopusqualityQ1
dc.identifier.startpage18
dc.identifier.urihttps://doi.org/10.1016/j.rvsc.2023.05.004
dc.identifier.urihttps://hdl.handle.net/20.500.12418/35452
dc.identifier.volume160
dc.identifier.wosWOS:001012268500001
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.language.isoen
dc.publisherElsevier Sci Ltd
dc.relation.ispartofResearch in Veterinary Science
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WOS_20250504
dc.subjectPregnancy toxemia
dc.subjectUmbilical cord
dc.subjectDoppler
dc.subjectPeak systolic velocity
dc.subjectEnd diastolic velocity
dc.titlePulse wave Doppler ultrasound of umbilical cord in experimentally induced pregnancy toxemia in sheep
dc.typeArticle

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