Triplex Doppler da artéria renal e a relação entre a ecobiometria dos rins com distância atlanto-coccígea e altura em Canis familiaris

Santana, Expedito Junior Matos; Beserra, Poliana S; Brito, A. B.; Miranda, Stefânia Araújo; Nikolak, Elizabeth; Domingues, Sheyla Farhayldes Souza

doi:10.1590/s0100-736x2009001000006

Cited by 6 publications

(6 citation statements)

References 19 publications

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“…Já Santana et al (2009), através de avaliação ecobiomé-trica em 22 cães adultos sem raça definida (11 machos e 11 fêmeas), encontraram diferenças para as medidas de diâ-metros longitudinal, dorsoventral e transversal, e volume, entre os rins esquerdo e direito, esses resultados divergentes foram relatados também em trabalhos ultrassonográfi-cos com primatas. Hill et al (1999) em um estudo com 136 fêmeas de macacos rhesus (Macaca mulatta), concluiu que, apesar da diferença de idade e peso dos animais, os rins exibiram tamanho similar.…”

Section: Discussionunclassified

Estudo morfométrico de rins em felinos domésticos (Felis catus)

et al. 2016

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ABSTRACT.-Agopian R.G., Guimarães K.P., Fernandes R.A., Silva M.V.M., Righetti M.M.S., Prisco C.R.D., Bombonato P.P. & Liberti E. A. 2016 Renal health has over the last few years called attention of veterinarians, because the chronic failure of the kidneyu is a major cause of morbidity and mortality in cats. This paper proposes biometric characterization of the kidneys from cats, Felis catus, on the macroscopic aspects (length, height, width, weight and volume), mesoscopic (height of the cortex and medulla, and their inter-relationship) and microscopic (glomerular volume) in order to establish possible differences arising from age, gender and bilateral symmetry. It where used 30 kidneys of animals from specie Felis catus (cat), 15 males and 15 females with ages between 3 months to 15 years, divided into three groups: group 1 (3-9 months), group 2 (3 -5 years) and group 3 (above 10 years). The kidneys were photographed, weighed, measured and processed for histology. The glomerular volume was obtained by stereology. The macroscopic data allowed to observe a morphometric and morphologic impartiality when compared sides, regardless of group and sex, about the length, height, width, weight and kidney volume. Significant difference was detected between males and females regardless of age for length, height, weight and volume, except for the width. There was a significant difference for all parameters considering the age: length, height, width, weight and volume. Wasnt detected signficant diferences between left and right kdney measurements of cortex, medulla and their inter-relationship, when considered bilateral symmetry. No difference was detected between males and females in mesoscopy in the cortex, medulla and cortex interrelationship cortex/medulla. Regarding age, the measurement of the height of the cortex and the interrelationship cortex/medulla showed a significant difference, but this difference was not established to the medulla of the kidney. Significant differences were found between groups, males and females, compared to the volume occupied by the glomerulus on the parenchyma renal. In all of biometric techniques there wasnt differences between right and left kidneys. The macroscopic measurements showed that males had larger kidney when compared length, height, width, weight and volume than females. The age range is directly related to the size of the kidney, which grows in all dimensions, gets heavier and with higher volume when compared young adults, and shows morphometry stability in relation to adults and senile. The renal parenchyma did not differ between the sexes, but the height of the cortex and the medulla ratio increases with age. The volume of the renal glomerulus is higher in males than in females and also increases in with the age. The kidneys showed a predominance of type I collagen in group 1 and 2, and type III collagen in group 3.

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Section: Discussionunclassified

Estudo morfométrico de rins em felinos domésticos (Felis catus)

et al. 2016

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“…Valores da AC e AMC de PSV, TAMAX, EnDV, IR e IP foram semelhantes àqueles descritos anteriormente [9,24]. O IR da AR foi similar ao encontrado por Koma et al [13], de 0,66 ± 0,07 e Santana et al [25], de 0,63 ± 0,02. Já o IP da AR desses trabalhos também foram próximos aos obtidos neste, correspondendo respectivamente a 1,34 ± 0,32 e 1,43 ± 0,06.…”

Section: Discussionunclassified

Sedation Effect of Acepromazine and Butorphanol in Dopplervelocimetric Parameters in Great Abdominal Arteries and Femoral Artery in Dogs

Mello

Torres

Cunha

et al. 2016

Acta Scientiae. Vet.

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Background: Doppler ultrasound is a non-invasive diagnostic imaging technique that allows vascular anatomical and dynamics evaluation. Each artery has flow velocity profiles and different Doppler spectrum. The purpose of this study was to determine if sedation with acepromazine and butorphanol in dogs alters Doppler velocimetric values and diameter from abdominal aorta, celiac, mesenteric cranial, renal, external iliac and femoral arteries of healthy dogs.Materials, Methods & Results: Twenty healthy female dogs, aged 1 to 5 years, with body weight ranging from 10 to 25 kg, were evaluated with Doppler ultrasound in order to obtain: peak systolic velocity, end diastolic velocity, time average medium velocity, time average maximum velocity, resistive index, pulsatility index, and diameter from abdominal aorta, celiac, mesenteric cranial, renal, external iliac and femoral arteries. The same animals were sedated with acepromazine (0.02 mg/kg) and buthorphanol (0.4 mg/kg) and the same parameters were reevaluated. The heart rate was also measured. The study was approved by the Animal Ethics Committee of UFRGS, under the 25552 protocol, and the owners signed an informed consent form. Statistical analysis was performed with pared t test.The heart rate was statistically significant different, 98 ± 20.13 bpm before and 79 ± 17.74 after sedation. The exam was done before and after sedation in all selected vessels, except the celiac and cranial mesenteric artery, which were possible only in 35% and 45% respectively. All measured arteries exhibit difference in at least two of the analyzed parameters, except femoral artery, that only diameter was different.Discussion: Each vessel was selected because of its importance, and each of them has its own characteristic waveform. Changes in patterns of flow velocity of the celiac artery and mesenteric can help to determine the physiological condition of the gastrointestinal tract; in the case of renal arteries are associated with diseases involving parenchyma and; thrombosis in the aorta and the iliac and femoral arteries may be difficult to evaluate without the Doppler image. Examination of the AC and AMC before and after sedation not could be performed in all animals, maybe because the present work was carried out with only fasting requirement, without using dimethicone, and one of the difficulties encountered was the presence of gas in the gastrointestinal tract. Another factor that may have contributed to these findings is that the acute stress of containment and other environmental factors can cause release of vasopressin and leads to vasoconstriction of the splanchnic vascular bed. The dopplervelocimetric data found in celiac, mesenteric cranial, renal and femoral arteries in non-sedated animals was similar to what was described by other authors. Although all dogs demonstrated relaxation during the exam, this sedation protocol alters the values found with Doppler ultrasound in the selected vessels, except femoral artery, which caused only increase of diameter. The Doppler differences found can be a consequence of a decrease in heart rate associated with longer cycle length, and therefore, larger diastolic volume with vessels that stayed with same diameter, or in case of caudal abdominal aorta, that reduced the diameter. This study compared the dopplervelocimetric values to the ones described by other authors in non-sedated animals and demonstrated that although acepromazine and buthorphanol are a good option to sedate dogs to perform ultrasound exam, they alter the Doppler values from aorta abdominal, celiac, cranial mesenteric, renal, external iliac arteries and the femoral artery diameter.

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“…Para o comprimento renal, não ocorreu diferença estatística de um rim para o outro, o que corrobora a alguns dados da literatura (Nyland et al 1989, Sampaio & Araújo 2002 e diverge de outros (Santana et al 2009). No entanto, do momento 1 para o 2, ocorreu diferença estatística entre o comprimento renal, embora a média em números absolutos, aparentemente apresentasse valores semelhantes.…”

Section: Discussionunclassified

“…No entanto, do momento 1 para o 2, ocorreu diferença estatística entre o comprimento renal, embora a média em números absolutos, aparentemente apresentasse valores semelhantes. O tamanho renal ainda é estudado na literatura e com frequência apresenta divergências entre os autores sobre a forma mais adequada de mensuração renal (Barr et al 1990, Mareschal et al 2007, Santana et al, 2009. Neste estudo, o objetivo foi verificar a diferença de um momento para o outro, já que as cadelas desidratadas diminuem a quantidade de fluxo sanguíneo renal.…”

Section: Discussionunclassified

Ultrassonografia Doppler na avaliação renal de cadelas diagnosticadas com piometra antes e após tratamento com ovariosalpingohisterectomia

Santos

Merlini²,

Souza

et al. 2013

Pesq. Vet. Bras.

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The aim of this study was evaluate the renal hemodynamics of bitches with pyometra by means of laboratory tests, ultrasound B mode and Doppler, before and after treatment with ovariohysterectomy (OSH). This study evaluated 30 bitches with pyometra, all were subjected to OSH (moment 1) and 20 were evaluated after 7 days (moment 2). The renal perfusion, the resistivity index (RI) of the main renal artery and the interlobar arteries (cranial, middle and caudal) were statistically different between times 1 and 2 (p<0,05). There was no statistical difference for renal perfusion between the left and the right kidney at the time 1 and 2. The correlations between the IR of the main artery and the variables used to determine renal function were stablished at the time 1. For the correlated variables: urea, creatinine, proteinuria, ratio GGT/creatinine and protein/creatinine were curvilinear and positive associations with the resistivity index of the main renal artery (p<0,05), however these correlations were considered medium and weak. Comparing the RI of the main renal artery with different scores of dehydration and renal perfusion, there was statistical difference, and show increased of resistance renal in bitches with moderate reduction in renal perfusion as well as in dehydrated bitches. Were evaluated several features of renal morphology in ultrasound B mode, however, only the presence of pelvic dilatation, medullary signal and other changes as infarcts areas and diffuse hyperechoic spots in the renal cortical and medullary were statistically different from one moment to the other, most frequently at the time 2. The results of this study show that the Doppler ultrasound can identify changes of reduction in renal perfusion by color Doppler and the increasing of the resistivity index of the renal arteries in some bitches with pyometra. As well as, the ultrasound B mode, although has non-specific changes, can detect progressive renal disorders in bitches with pyometra.

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Triplex Doppler da artéria renal e a relação entre a ecobiometria dos rins com distância atlanto-coccígea e altura em Canis familiaris

Cited by 6 publications

References 19 publications

Estudo morfométrico de rins em felinos domésticos (Felis catus)

Estudo morfométrico de rins em felinos domésticos (Felis catus)

Sedation Effect of Acepromazine and Butorphanol in Dopplervelocimetric Parameters in Great Abdominal Arteries and Femoral Artery in Dogs

Ultrassonografia Doppler na avaliação renal de cadelas diagnosticadas com piometra antes e após tratamento com ovariosalpingohisterectomia

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