Echobiometrics kidney and renal artery triplex doppler of canine fetuses

M.A.R Feliciano,R.M Crivalero,M.A.M Silva,W.R.R Vicente,L.N Coutinho,A.C Nepomuceno,D.J Cardilli,M.E.F Oliveira

doi:10.1590/1678-41626120

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 10kg, 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.

Highlights

The scope of the current studies in the veterinary setting have been to discover new methods of early detection of renal disease, such as biometry and dopppler flowmetry (Melo et al, 2006).The renal biometry allows for the detection of uni or bilateral misdiagnosed abnormalities of the kidneys
In order to determine reference values for echobiometry kidney and renal vascular indices in fetuses, as methods for early diagnosis of congenital renal diseases in dogs, the aim of the present study was to evaluate by B mode and Triplex Doppler sonographic features, the echobiometry of the canines’ fetal kidneys and parameters of renal artery blood flow of the conceptus
The values of fetal kidney echobiometry obtained during the gestational development increased significantly from the 5th to the 8th week of pregnancy (P

Summary

Introduction

The scope of the current studies in the veterinary setting have been to discover new methods of early detection of renal disease, such as biometry and dopppler flowmetry (Melo et al, 2006). The renal biometry allows for the detection of uni or bilateral misdiagnosed abnormalities of the kidneys. Studies based on Doppler blood flow allow for the detection of organic hemodinamic changes, which contribute for precise diagnosis and better knowledge of the physiopathology. The alteration of the renal perfusion may be the first sign of abnormal renal function. Decreased renal perfusion may be assimptomatic in the early stages and can trigger glomerular, tubular and vascular disorders, which can lead to irreversible diseases (Melo et al, 2006)

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