Affiliation:
1. 2 Szent István University Department of Pathology Budapest Hungary
2. 3 Hungarian Academy of Sciences - Large Animal Clinical Research Group Üllő Hungary
Abstract
Monitoring fetal heart rate (FHR) and fetal heart rate variability (FHRV) helps to understand and evaluate normal and pathological conditions in the foal. The aim of this study was to establish normal heart rate reference values for the ongoing equine pregnancy and to perform a heart rate variability (HRV) time-domain analysis in Lipizzaner mares. Seventeen middle- and late-term (days 121–333) pregnant Lipizzaner mares were examined using fetomaternal electrocardiography (ECG). The mean FHR (P = 0.004) and the standard deviation of FHR (P = 0.012) significantly decreased during the pregnancy. FHR ± SD values decreased from 115 ± 35 to 79 ± 9 bpm between months 5 and 11. Our data showed that HRV in the foal decreased as the pregnancy progressed, which is in contrast with the findings of earlier equine studies. The standard deviation of normal-normal intervals (SDNN) was higher (70 ± 25 to 166 ± 108 msec) than described previously. The root mean square of successive differences (RMSSD) decreased from 105 ± 69 to 77 ± 37 msec between the 5th and 11th month of gestation. Using telemetric ECG equipment, we could detect equine fetal heartbeat on day 121 for the first time. In addition, the large differences observed in the HR values of four mare-fetus pairs in four consecutive months support the assumption that there might be ‘high-HR’ and ‘low-HR’ fetuses in horses. It can be concluded that the analysis of FHR and FHRV is a promising tool for the assessment of fetal well-being but the applicability of these parameters in the clinical setting and in studs requires further investigation.
Reference23 articles.
1. Arterial pressure, vascular input impedance, and resistance as determinants of pulsatile blood flow in the umbilical artery;Adamson S. L.;Eur. J. Obstet. Gynecol. Reprod. Biol.,1999
2. Evaluation of fetal well-being by transabdominal ultrasonography in the mare. Preliminary results;Baska-Vincze B.;Magyar Állatorvosok Lapja,2014
3. Veterinary evaluation of fetal well-being in the horse: Literature review;Baska-Vincze B.;Magyar Állatorvosok Lapja,2013
4. Assessment of feto-placental well-being in the mare from mid-gestation to term: Transrectal and transabdominal ultrasonographic features;Bucca S.;Theriogenology,2005
Cited by
13 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献