Assessment of bovine uterine artery hemodynamics using Doppler ultrasound and a computer model

Waite, Leroy R.

doi:10.31274/rtd-180813-9107

Cited by 1 publication

(1 citation statement)

References 60 publications

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“…This may be attributed to vasodilation and increased blood flow through the MUA (Pancarci et al, ). Systolic upstroke time (AT) is more or less recognized as an indicator of resistance within a blood vessel (Waite ) and has been successfully used in human obstetrics for detection of various pathological conditions of vital organs (Granata et al, ).…”

Section: Discussionmentioning

confidence: 99%

Doppler sonography of uterine blood flow at mid‐oestrus during different degree of clinical endometritis in dairy cows

Sharma

Singh

Abrol

et al. 2019

Reprod Domestic Animals

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The present study was aimed at analysing the mid‐oestrous uterine blood flow parameters during varying degree of endometritis in dairy cows. Degree of clinical endometritis was adjudged on the basis of visual examination of uterine discharge collected from cows at mid‐oestrus, that is mild (slightly turbid; n = 13), moderate (turbid with pus flakes; n = 14) and severe (milky; n = 13). Pulsatility and resistance indices (PI and RI), time average mean velocity (TAMEAN), time average maximum velocity (TAMAX), diameter of the artery, volume of blood flow, Doppler pulse duration (DPD) and systolic upstroke/acceleration time (AT) were measured to study the spectral waveforms at mid‐oestrus. Significantly higher (p < .01) PI and RI were found in cows diagnosed with mild degree in comparison with cows diagnosed with moderate and severe degrees of clinical endometritis. There was significantly higher (p < .01) velocity (TAMEAN and TAMAX), volume of blood flow (BFV‐TAMEAN, BFV‐TAMAX) and DPD in both the middle uterine arteries during moderate and severe degrees of clinical endometritis as compared to mild endometritis. However, significantly higher (p < .01) AT was recorded in cows diagnosed with mild degree as compared to moderate and severe degrees of clinical endometritis. Pearson's correlation analysis has shown that RI was positively correlated with PI and AT in all the groups under study (mild degree, r = .72 and .49; moderate degree, r = .54 and .38; severe degree, r = .90 and .42; p < .05). However, there found significantly negative correlation (p < .05) with other parameters in all the cows irrespective of degree of inflammation. Therefore, it may be deducted that assessment of uterine inflammation can be done with a non‐invasive technique known as Doppler sonography which can be useful in adjudging the hemodynamic changes inside uterus and future fertility of dairy cows.

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Section: Discussionmentioning

confidence: 99%