48 Transrectal color Doppler evaluation of umbilicus, placentomes, and uterine vascularity changes throughout pregnancy in Surti buffalo

2020 ◽  
Vol 32 (2) ◽  
pp. 149
Author(s):  
M. Gaur ◽  
G. N. Purohit
Keyword(s):  
Blood Flow ◽  
Pulsatility Index ◽  
Uterine Artery ◽  
Color Doppler ◽  
Resistive Index ◽  
Flow Mode ◽  
Adult Age ◽  
Uterine Arteries ◽  
Doppler Evaluation ◽  
Surti Buffalo

With an objective to record the appearance, vascularity changes in umbilicus, placentomes, and blood flow to the uterus, adult (age 5-10 yr) Surti buffalo (parity=2-6; n=24) were inseminated during natural oestrus during the breeding season and scanned by transrectal B mode and colour flow mode ultrasonography every 3-4 days till Day 90 of gestation and then at an interval of 15 days for the complete gestation. The umbilical cord was first visible on Day 38; however, colour Doppler wave fronts could first be obtained on Day 46, which became increasingly distinct thereafter. The placentomes could first be identified at Day 76 of gestation. The placentome diameters increased from Day 76 until the month 7 with significant increases (P<0.05) during Day 80, and months 4, 5, and 6 of gestation; thereafter, the increase was not significant. The vascularity of placentomes could also be recognised at Day 76 and this increased with increasing months of gestation. The blood flow to the middle uterine arteries could be identified after month 2 of gestation. The resistive index values of the middle uterine artery ipsilateral to the gravid horn showed an almost linear decline with a significant (P<0.05) drop at months 4 and 9 of gestation. Similarly, resistive index values of the middle uterine artery contra-lateral to the gravid horn revealed a significant (P<0.05) decrease on month 3, 5, and 6. A significant decrease for pulsatility index values of the middle uterine artery ipsilateral to the gravid horn was observed in months 3, 6, and 8 of gestation. However, the pulsatility index values for the middle uterine artery contralateral to the gravid horn showed a nonsignificant decrease. It was concluded that the umbilicus and placentomes are first visible at 38 and 76 days of gestation and the vascularity of the umbilicus, placentomes, and middle uterine artery increases with advancement of gestation in Surti buffalo.

scholarly journals 298 Effects of parity on late gestational uterine blood flow and hemodynamics in beef cattle

2019 ◽  
Vol 97 (Supplement_3) ◽  
pp. 137-138
Author(s):  
Allison M Meyer ◽  
Natalie B Duncan ◽  
Katy S Stoecklein ◽  
Emma L Stephenson
Keyword(s):  
Heart Rate ◽  
Blood Flow ◽  
Birth Weight ◽  
Pulsatility Index ◽  
Uterine Artery ◽  
Color Doppler ◽  
Peak Systolic Velocity ◽  
Late Gestation ◽  
Artery Blood Flow ◽  
Diastolic Velocity

Abstract To determine parity effects on late gestational uteroplacental blood flow, uterine artery hemodynamics were measured in 13 primiparous and 11 multiparous (parity 3 and 4) non-lactating, fall-calving crossbred females beginning 109 d prepartum. Females were nutritionally managed as one group to meet or exceed nutrient requirements. Transrectal color Doppler ultrasonography of the both uterine arteries was conducted 3 to 6 times per female across late gestation, ending at approximately 20 d prepartum. Data were analyzed with parity (primiparous vs. multiparous), day prior to calving, and their interaction in the model; day was a repeated effect. Dam BW was greater (P < 0.001) for multiparous than primiparous females, and increased (P = 0.004) as gestation progressed. Calf birth weight was unaffected (P = 0.87) by parity. The parity x day interaction tended to affect (P = 0.06) ipsilateral uterine artery blood flow (L/min), where multiparous cows had a greater increase per day. Total and contralateral uterine artery blood flow were unaffected (P ≥ 0.11) by parity, but increased (P < 0.001) with day of gestation. When expressed relative to dam BW, total and contralateral blood flow were greater (P ≤ 0.04) in primiparous than multiparous females; ipsilateral blood flow was unaffected (P ≥ 0.13) by parity, however. Ipsilateral pulsatility index and both resistance indices were unaffected (P ≥ 0.28) by parity and day, but day tended to affect (P = 0.07) contralateral pulsatility index. Parity did not affect (P ≥ 0.11) cross-sectional area, mean velocity, peak systolic velocity, and end diastolic velocity of either uterine artery, but all increased (P < 0.001) as gestation progressed. Heart rate was greater (P = 0.03) in primiparous than multiparous females. Data suggest that uterine artery blood flow and heart rate may be altered in primiparous females, even when birth weight is unaffected by parity.

State of uterine blood flow in women of reproductive age with endometrial hyperplasia

2016 ◽  
pp. 141-143
Author(s):  
V.G. Dubinina ◽  
◽  
K.M. Vizir ◽  
Keyword(s):  
Blood Flow ◽  
Pulsatility Index ◽  
Uterine Artery ◽  
Endometrial Hyperplasia ◽  
Color Doppler ◽  
Reproductive Period ◽  
Control Group ◽  
Uterine Blood Flow ◽  
Resistivity Index ◽  
Significant Difference

The objective: to assess the state of uterine blood flow in endometrial hyperplasia in women of reproductive period. Patients and methods. 130 patients (n=100 – the main group; n=30 – control group) aged 18-49 years with endometrial hyperplasia were examined. All the women underwent 2D transvaginal echography and color Doppler mapping. The angle-independent indices (pulsatility index, resistivity index, diastolic/systolic ratio) of blood flow were determined in the uterine, arcuate, radial, basal and spiral arteries. Results. There was no significant difference in the indices of blood flow of the right uterine artery, arcuate, radial, basal arteries among patients and control group. Among women with endometrial hyperplasia pulsatility index of the left uterine artery amounted to – 2.11, resistivity index – 0.88, and the diastolic/systolic ratio – 5.45, in women of the control group – 2.34, 1.01 and 7.50, respectively. Only among patients with endometrial hyperplastic process was registered blood flow in the spiral arteries. Conclusion. The use of color Doppler mapping is appropriate, because registration of intraendometrial blood flow allows an endometrial hyperplastic process to be diagnosed with a high degree of confidence. Key words: endometrial hyperplasia, reproductive period, color Doppler mapping, intraendometrial blood flow, pulsatility index, resistivity index, diastolic/systolic ratio.

scholarly journals Contribution of ocular B-mode and triplex Doppler in the evaluation of 10 Poodle dogs with cataracts

2013 ◽  
Vol 65 (2) ◽  
pp. 359-363 ◽  
Author(s):  
M.A.R. Feliciano ◽  
M.A. Abrahim ◽  
R.V.R. Peixoto ◽  
K.L. Yasunaga ◽  
W.R.R. Vicente ◽  
...  
Keyword(s):  
Blood Flow ◽  
Pulsatility Index ◽  
Ophthalmic Artery ◽  
Ultrasound Examination ◽  
Resistive Index ◽  
Ocular Diseases ◽  
Ocular Ultrasound ◽  
Doppler Evaluation ◽  
The Right

The findings of b-mode and especially triplex Doppler ocular ultrasound in the evaluation of 10 Poodle dogs with cataracts, which bring a contribution not yet reported in veterinary medicine, were reported. Ten Poodle dogs of varied ages and presenting cataracts were used. All animals were evaluated for ophthalmic and ultrasound examination. The ultrasound examination allowed the evaluation of the sonographic anatomy of the eye and measurement of the axial thickness of the lens (ATL). Using the Doppler mode, the blood flow of the ophthalmic artery and its vascular indexes, systolic velocity (SV), resistive index (RI) and pulsatility index (PI) were measured. Values found for ATL were 5.89±1.05 for the right eye (OD) and 6.07±1.32 for the left eye (OS). Values found using Doppler evaluation were SV OD: 26.54±7.05 and SV OS: 29.21±11.18; PI OD: 1.89±0.61 and PI OS: 1.7±0.35; RI OD: 0.76±0.1 and RI OS: 0.72±0.09 (OS). It was concluded that triplex Doppler was important for the determination of vascular indexes of the ophthalmic artery, which can be used for monitoring animals with hemodynamic alterations of the eyes and monitoring the therapy of ocular diseases.

scholarly journals 71 The relationships of late gestational uterine artery blood flow with calf and placental size

2020 ◽  
Vol 98 (Supplement_4) ◽  
pp. 48-49
Author(s):  
Colby A Redifer ◽  
Allison M Meyer
Keyword(s):  
Blood Flow ◽  
Uterine Artery ◽  
Color Doppler ◽  
Correlation Coefficients ◽  
Strong Positive Correlation ◽  
Artery Blood Flow ◽  
Positive Correlation ◽  
Uterine Arteries ◽  
Positive Correlations ◽  
Moderate Positive Correlation

Abstract Utilizing crossbred fall-calving beef females over 2 years, relationships of uterine artery blood flow (UBF) with cow BW, calf birth BW, and placental characteristics were investigated. Transrectal color Doppler ultrasonography of both uterine arteries was conducted, and scans were grouped into 80, 60, 40, and 20 ± 5 d prior to calving (DPC; n = 28, 38, 36, and 24, respectively). Placentas were dissected post-expulsion (n = 21, 26, 26, and 19, respectively). Correlation coefficients were determined for UBF with BW and placental measures at each timepoint. Total UBF had a moderate positive (80, 40, and 20 DPC, P ≤ 0.009) or weak positive correlation (60 DPC, P = 0.02) with calf BW. Calf BW had a moderate positive correlation (P ≤ 0.04) with contralateral UBF (80, 60, and 40 DPC). Cow BW was not correlated (P ≥ 0.07) with UBF. Total and contralateral UBF had moderate positive correlations (P ≤ 0.03) with cotyledonary, intercotyledonary and total placental weights at 40 DPC and with intercotyledonary weight at 20 DPC. Contralateral UBF had a moderate positive correlation (P = 0.03) with total placental weight at 20 DPC. Ipsilateral UBF had no relationship (P ≥ 0.06) with calf or placental weights. Cotyledon number had a moderate negative correlation (P = 0.02) with ipsilateral UBF at 20 DPC, but a moderate (60 and 80 DPC) or strong (20 and 40 DPC) positive correlation (P ≤ 0.05) with contralateral UBF. Average cotyledonary size had a moderate positive correlation (P = 0.01) with total UBF at 20 DPC. Ipsilateral UBF had a moderate (80 and 40 DPC, P ≤ 0.04) or strong positive correlation (20 DPC, P = 0.003) with average cotyledonary size. These data suggest that late gestational UBF drives fetal and placental growth. Interestingly, contralateral UBF may have a disproportionately greater contribution.

scholarly journals Relation of serum visfatin level and uterine artery Doppler to preeclampsia

2017 ◽  
Vol 7 (1) ◽  
pp. 48 ◽  
Author(s):  
Mohamed Abd El-Moety El-Samra ◽  
Sherif Mansour Aggag
Keyword(s):  
Doppler Ultrasound ◽  
Pulsatility Index ◽  
Uterine Artery ◽  
Pulsed Doppler ◽  
Maternal Circulation ◽  
Cross Sectional ◽  
Uterine Arteries ◽  
Pregnant Females ◽  
Mild Preeclampsia ◽  
Visfatin Level

Background: Preeclampsia (PE) is a significant cause of remarkable fetomaternal morbidity and mortality worldwide. Visfatin is 52 KDa novel adipokine, pre B cell colony enhancing factor (PBEF) which could be used as a biochemical marker predictor or a diagnostic tool for preeclampsia. Trans abdominal pulsed Doppler ultrasound (US) monitor the impedance to blood flow in the uterine arteries in pregnant females and those with preeclampsia. Visfatin has been implicated in the pathogenesis of preeclampsia with a limited contradictory. The aim of our study is to monitor the risky pregnant females through Visfatin level and transabdominal pulsed Doppler of the uterine artery.Methods: Assessment of the serum Visfatin levels in the maternal circulation of preeclamptic pregnant females wether mild or severe, and compared to those in the normal pregnant subjects as control through recruitment of cases of mild PE (n=40), severe PE (n=40), normal pregnant subjects (n=60) in a cross sectional study where the cases were of the patients hospitalized at El Shatby Hospital of Obstetrics and Gynecology, and the control subjects were of referrals to the outpatient departments. Fasting blood samples were drawn, kept at -20 degree centigrades , enzyme linked immune sorbant assay (ELISA) Test was performed on them to determine the Visfatin level and recorded the uterine arteries pulsatility index through transabdominal doppler ultrasound. Lastly, the data were analysed using (F test) ANOVA statistical method.Results: Amongst the groups, Serum visfatin level was significantly higher in the severe preeclamptic group rather than the normal pregnant group and those with mild preeclampsia (p<0.001). Uterine artery pulsatility index was significantly higher in the severe preeclamptic group rather than the normal pregnant group and those with mild preeclampsia (p<0.001).Conclusions: Severe preeclamptic pregnant females were shown to represent higher circulating visfatin levels as one of the most recent biochemical markers of preeclampsia, higher uterine artery pulsatility index compared to normal pregnant and those with mild preeclamptic groups of women.

221. Localisation of relaxin receptors (Rxfp1) in the uterine artery and the effects of blocking circulating relaxin on passive mechanical wall properties in the uterine artery of late pregnant rats

2008 ◽  
Vol 20 (9) ◽  
pp. 21
Author(s):  
L. A. Vodstrcil ◽  
J. Novak ◽  
M. Tare ◽  
M. E. Wlodek ◽  
L. J. Parry
Keyword(s):  
Blood Flow ◽  
Smooth Muscle ◽  
Vascular Smooth Muscle ◽  
Uterine Artery ◽  
Late Pregnancy ◽  
Artery Wall ◽  
Pregnant Rats ◽  
Uterine Arteries ◽  
Wall Properties ◽  
Wall Stiffness

During pregnancy, the uteroplacental circulation undergoes dramatic alterations to allow for the large increase in blood flow to the feto-placental unit. These alterations are achieved through several mechanisms including structural changes in the uterine artery wall and endothelium-dependent vasodilation. Small renal arteries of relaxin-deficient mice and rats have enhanced myogenic reactivity and decreased passive compliance, and are relatively vasoconstricted (Novak et al. 2001, 2006). To date, no study has identified relaxin receptors (Rxfp1) in arteries or investigated the effects of relaxin deficiency in pregnancy on uterine artery function. The aims of this current study were to: 1) localise Rxfp1 in the uterine arteries, 2) measure myogenic reactivity in small uterine arteries after relaxin treatment, and 3) test the hypothesis that blocking circulating relaxin in late pregnancy will increase uterine artery wall stiffness. We demonstrated that Rxfp1 is expressed in the uterine arteries of pregnant mice and rats. Brightfield immunohistochemistry and immunofluorescence using antibodies specific for rat Rxfp1, α-smooth muscle actin and CD31 localised Rxfp1 protein predominantly to the vascular smooth muscle in the uterine artery of pregnant rats. Administration of recombinant human H2 relaxin (4 ug/h) for 6 h or 5 days in intact and ovariectomised rats reduced myogenic reactivity of small uterine arteries in vitro. Pregnant rats were treated with a monoclonal antibody against circulating relaxin (MCA1) or control (MCAF) for 3 days (Days 17–19) and uterine arteries were mounted on a pressure myograph to assess passive mechanical wall properties. Neutralising circulating relaxin in late pregnancy resulted in a significant increase in uterine artery wall stiffness. These data demonstrate that relaxin acts on the vascular smooth muscle cells in the uterine artery and may be involved in the pregnancy-specific vascular remodelling of uterine arteries to increase vasodilation and blood flow to the uterus and placenta. (1) Novak J et al. (2001). J Clin Invest 107: 1469–75 (2) Novak J et al. (2006). FASEB J 20: 2352–62

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