184 resultados para Alendronato sódico


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OBJETIVO: Obter o padrão de normalidade da pressão e comprimento do esfíncter inferior do esôfago (EIE) em gatos anestesiados com tiopental e analisar a viabilidade prática do anestésico para uso neste tipo de investigação sobre atividade motora do esôfago de felinos. MÉTODOS: em 12 gatos anestesiados com tiopental sódico foram realizados estudos manométricos do EIE, com leitura por perfusão em três canais radiais. Foram avaliadas as pressões e comprimentos do EIE. RESULTADOS: Os valores médios da pressão e comprimento do EIE foram 33,52 ± 12,42 mmHg e 1,6 ± 0,4 cm, respectivamente. CONCLUSÃO: Foi possível estabelecer valor de referência para a pressão e comprimento do EIE de felinos, com uma contenção e retorno confortáveis para o animal, utilizando o tiopental sódico como agente anestésico.

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The aim of this study was to evaluate the plasma concentration of diclofenac sodium (DS) in dogs submitted to diclofenaco phonophoresis and to evaluate if phonophoresis induces greater absorption of this drug in dogs. Five dogs were used in eight different groups at different times: One group received oral administration of 40mg of DS per dog and seven groups received topical application of emulgel DS. The topical application area was 20cm(2). A continuous ultrasound frequency of 1MHz and intensity of 0.4W cm(-2) was used. Blood collections were performed before the treatment (T0), and 1h (T1) and 4h (T2) after ultrasound application for all groups. DS concentrations in plasma were measured by high performance liquid choramatohraphy (HPLC). There was significant increase of DS plasma concentration only at T1 in the oral administration group. It was not possible to detect any concentration of DS in the plasma of dogs after topical application of DS, even after DS phonophoresis. The facilitation of transdermal penetration by ultrasound has not been verified under the protocol specified in this research.

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In 18 dogs, previously anesthetized with sodium pentobarbital for the surgical preparation, catheterism and monitoring, the action of sodium pentobarbital (7.5 mg/kg) and enflurane (1.5 - 2%) in the liver circulation was studied. Measurements of the following parameters were made in four different times, before and 15, 30 and 60 min after the drug administration. By direct determination: hepatic artery flow, portal vein flow, mean pressure of the abdominal aorta, peripheral arterial pressure (mean), pressure in the caudal cava vein, portal pressure; and by indirect determination: total flow, arterial-cava gradient, portal-cava gradient, resistance in the hepatic artery territory, resistance in the territory of the portal vein, and total resistance. Based on the results, it is concluded that in the experiment's conditions: sodium pentobarbital doesn't change significantly the hepatic circulation, and enflurance produces a fall in the total hepatic flow, by reducing the portal flow, without alterations of the hepatic arterial flow. It diminishes the total hepatic resistance by diminishing the arterial resistance without alterations of the portal resistance; it diminishes the arterial-cava gradient in consequence of the reduction of the abdominal aorta pressure and of the portal pressure, but it seems that the caudal cava pressure is not altered. It also occurs a fall in the peripheral mean pressure.

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In six dogs, previously anesthetized with sodium pentobarbital (30 mg/kg) for surgical preparation, catheterism and monitoring, the action of sodium pentobarbital (7,5 mg/kg) on renal flow was studied. Determinations of mean arterial pressure, venous pressure, cardiac rate, arterio-cava pressure gradient and renal arterial resistance were made. Pentobarbital doesn't change significantly the renal blood flow or any of the other parameters studied, with the exception of venous pressure in the inferior caval vein where the drug produces a significant fall.

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)