Parâmetros Doppler velocimétricos das artérias renais e da aorta abdominal em gatos da raça persa

Abstract

Foi realizado um estudo prospectivo com 50 unidades renais de gatos adultos jovens da raça persa, as quais foram examinadas ao ultrassom Doppler. Os animais foram selecionados como sadios por meio de exames laboratoriais e de pressão arterial sistólica. Foram mensurados os seguintes parâmetros: a velocidade de pico sistólico máximo (VPS), a velocidade diastólica mínima (VDF) e os índices de resistividade (IR) das artérias renais (AR) e da aorta (AO). Para a AR esquerda, foram obtidos VPS 40,96±9,08cm s-1 e IR 0,55±0,07 e, para a AR direita, VPS 41,39±9,89cm s-1 e IR 0,52±0,07. Não foi observada diferença estatisticamente significante entre os lados. Assim, ao serem consideradas ambas as AR, obteve-se a média de VPS 41,17±9,40cm s-1 e IR 0,53±0,07. A média do diâmetro da AR foi de 0,15±0,02cm. Para a aorta, obteve-se VPS 53,17±13,46cm s-1 e média de diâmetro de 0,38±0,04cm. Correlacionando-se os valores de VPS da AR e da AO, obteve-se um índice mínimo de 0,38 e máximo de 1,52, com média de 0,82±0,30.

Resistivity and pulsatility indexes in feline kidney disease: a systematic review

“…Although most studies used upper limits of 0.70 (n = 10) and 1.29 (n = 3) as standards to classify altered RI and PI, other values were suggested. A renal RI value of 0.69 was suggested in Persian cats by Carvalho et al 38 . and Carvalho and Chammas 37 .…”

“…The remaining studies were developed in Poland, Portugal, Iran, Italy, and Turkey (one study per country). Of the 14 studies included, five focused on determining normal Dopplerfluxometric parameters of healthy cats without renal injury (Table 1 8,22,37–39 ) and four on the investigation of the applicability of these indexes in kidney disease (Table 1 6,11,23,24 ). The other five studies evaluated the indexes in clinically healthy cats before and after the administration of sedative protocols (Table 1 25,26 ) and anesthetics protocols (Table 1 21 ), as well as in the evaluation of RI in the postsurgical period of kidney transplantation (Table 1 40,41 ).…”

“…The characteristics at the baseline were similar in nine studies, 6,8,13,21,26,37,39–41 while in three 10–12 the characteristics were not comparable between the groups and, therefore, classified as “high risk.” In two studies, 6,22 the details were insufficient and received an “unclear” classification. With regard to the randomness of the housing, in 12 studies, 6,8,11,21–26,37,39,41 the details were insufficient and in the other two, 38,40 information about the animals’ housing was provided and considered appropriate, and therefore, classified as “low risk.”…”

“…In seven articles, 6,8,24,26,37,40,41 some type of failure did not allow a complete reporting of all patients’ outcomes, either due to lack of cooperation from the patient or limitations of the technique. In four studies, 21,23,25,38 all evaluations were included in the analysis and in three, 11,22,39 the details regarding the results were insufficient.…”

“…In this systematic review, only five studies detailed a previous adequate preparation of the patients 8,23,25,26,38 . For satisfactory results, some methodological steps are relevant for the better applicability of RI and PI, such as with the use of antiphysetics and extensive hair shaving.…”