Echobiometrics kidney and renal artery triplex doppler of canine fetuses

Abstract

The aim of this study was to assess the sogographic parameters and biometry of canine fetal kidneys using the B mode, and to determinate the vascular index of the fetal renal arteries using the Doppler Triplex. Twenty four Shi-tzu and Pug, weighting between 4 and 10 kg, aging between 4 and 6 years old were evaluated. The B mode, the fetal renal echobiometry and regularity of the renal surface, echotexture and cortex:medular ratio were evaluated during the 5th, 6th, 7th and 8th weeks of pregnancy. At the same time point of the B mode evaluation, the Doppler Triplex was carried out to assess the sistolic peak velocity (SPV), end diastolic velocity (EDV), vascular resistive (RI) and pulsatility index (PI). B mode revealed no fetal renal abnormalities and echobiometry showed important measurements during fetal development (P<0.0001). The values of the fetal renal arteries index (PSV and EDV) increased during the course of the pregancy (P<0.05) and remained constant for PI and RI (P>0.05). B mode and Doppler Triplex were important tools for the assessment of fetal renal development, using echobiometry and renal arterial index in canie fetuses.

Gestational echobiometry in brachycephalic bitches using high-definition ultrasonography

“…In human the of renal biometry is utilize as an additional method for estimation of fetal age and to identify congenital kidney diseases (Dias et al 2014). This parameter contradicts that reported by Feliciano et al (2014), who suggested kidney echobiometry as an appropriate predictor of gestational age in bitches.…”

Preliminary Evaluation of Cortical and Medullary Echogenicity in Normal Canine Fetal Kidneys during the Last 10 Days of Pregnancy

“…In canine fetuses, ultrasonographic kidney development and echobiometrical parameters were seen in healthy fetuses [12,17]. Canine fetal kidney echogenicity was qualitatively assessed and reported to be lower than the maternal kidney echogenicity from week 5 to 8 of pregnancy [33].…”

Ultrasonography for the evaluation of pregnancy in the female canine

“…Initially at week 5 there is no diastolic flow in the foetal abdominal aorta but starting week 6, slow diastolic flow is noted (Umamageswari et al, 2018). The foetal renal arteries reveal increasing PSV and EDV and constant PI and RI from week 5 to 8 of pregnancy (Feliciano et al, 2014). The middle cerebral artery of the foetus reveals increases in PSV and EDV and decreases in PI and RI from the 5th to the 8th week of pregnancy (Feliciano et al, 2013).…”