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      Avaliação clínica de cães com doença do disco intervertebral (Hansen tipo I) submetidos à descompressão cirúrgica: 110 casos Translated title: Clinical evaluation of dogs with intervertebral disc disease (Hansen type I) submitted to surgical decompression: 110 cases

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          Abstract

          RESUMO: O objetivo deste estudo foi identificar cães com doença do disco intervertebral toracolombar (Hansen tipo I) submetidos ao tratamento cirúrgico em um serviço de rotina em neurologia de um hospital veterinário universitário no período de 2006 a 2014, e obter informações a respeito da idade, do sexo, da raça, local da extrusão, interpretação da mielografia, avaliação dos graus de disfunção neurológica, recuperação funcional desses cães e observar a ocorrência de recidiva dos sinais clínicos da doença. A raça mais frequente foi Dachshund (69%), seguida dos cães sem raça definida (14,5%). Os locais mais afetados foram entre T12-T13 (31,9%) e L1-L2 (19,1%). Dos 110 cães, 74 (67,3%) tiveram melhora dos sinais clínicos após o procedimento cirúrgico, sendo 54 (49,1%) considerados satisfatórios e 20 (18,2%), parcialmente satisfatórios. Destes cães, seis (8,1%) cães estavam em grau II, 19 (25,7%) em grau III, 35 (47,3%) em grau IV e 14 (18,9%) em grau V. Pode-se concluir que o tratamento cirúrgico promove recuperação funcional satisfatória na maioria dos cães com extrusão de disco toracolombar. O prognóstico para recuperação funcional após o tratamento cirúrgico é tanto melhor quanto menor for o grau de disfunção neurológica e o percentual de recidiva é baixo em animais submetidos a este tipo de terapia.

          Translated abstract

          ABSTRACT: The aim of this study was to identify dogs with thoracolumbar intervertebral disc disease (Hansen type I) submitted for surgical treatment on a routine service in neurology in a university veterinary hospital in 2006-2014, and to get information about age, sex, breed, site of extrusion, interpretation of myelography, evaluation of the degree of neurological dysfunction, functional recovery of these dogs, and to verify the recurrence of clinical signs of disease. The most common breed was Dachshund (69%), followed by mixed breed (14.5%). The most affected sites were between T12-T13 (31.9%) and L1-L2 (19.1%). Of the 110 dogs, 74 (67.3%) improved clinical signs after surgery, 54 (49.1%) satisfactory and 20 (18.2%), in part satisfactory. From these dogs, six (8.1%) dogs were in grade II, 19 (25.7%) in grade III, 35 (47.3%) in grade IV, and 14 (18.9%) in grade V. It can be concluded that satisfactory surgical treatment promotes functional recovery in most dogs with thoracolumbar disk extrusion. The prognosis for functional recovery after surgical treatment is better the lower the degree of neurological dysfunction and the recurrence percentage is lower in dogs subjected to this type of therapy.

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          Most cited references 23

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          Intervertebral disc disease in dogs.

          Intervertebral disc herniation is a common cause of neurologic dysfunction in dogs. This article reviews the anatomy, pathophysiology, diagnostic imaging, treatment options, and prognosis for canine cervical and thoracolumbar intervertebral disc disease. The extensive literature pertinent to intervertebral disc disease is reviewed with the goal of summarizing the information available to help clinicians in their decision making. Copyright 2010 Elsevier Inc. All rights reserved.
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            Prognostic value of magnetic resonance imaging in dogs with paraplegia caused by thoracolumbar intervertebral disk extrusion: 77 cases (2000-2003).

            To determine whether magnetic resonance imaging findings in dogs with paraplegia caused by thoracolumbar intervertebral disk extrusion were predictive of clinical outcome. Retrospective case series. 77 dogs. Medical records and magnetic resonance images were reviewed; clinical outcome was classified as successful (regained ability to walk with no more than mild neurologic deficits) or unsuccessful (severe neurologic deficits persisted). The prognostic value of magnetic resonance imaging was compared with prognostic value of deep pain perception, duration of clinical signs, and rate of onset of clinical signs. 33 (43%) dogs had areas of hyperintensity of the spinal cord greater than or equal to the length of the L2 vertebral body on T2-weighted magnetic resonance images. All 44 dogs without areas of hyperintensity on T2-weighted images had a successful outcome, but only 18 of the 33 (55%) dogs with an area of hyperintensity did. Only 5 of 16 dogs with an area of hyperintensity that had also lost deep pain perception had a successful outcome. The odds ratio for an unsuccessful outcome for a dog with an area of hyperintensity (29.87) was higher than the odds ratio for a dog that had lost deep pain perception (5.24). Duration and rate of onset of clinical signs were not associated with clinical outcome. Findings suggest that results of magnetic resonance imaging can be used to predict clinical outcome in dogs with paraplegia caused by intervertebral disk extrusion.
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              A retrospective study of intervertebral disc herniation in dogs in Japan: 297 cases.

              We investigated the epidemiological characteristics of intervertebral disc herniation (IVDH) in Japan in a large population using a retrospective study. The sample population was dogs (n=297) with IVDH in Japan. Medical records were reviewed for breed, sex, age, affected interspace and neurological severity. The dogs were comprised of 132 cases of cervical IVDH (C-IVDH) and 165 cases of thoracolumbar IVDH (TL-IVDH). In Japan, the Dachshund, Beagle and Shih Tzu tended to suffer from both C-IVDH and TL-IVDH. The Shiba Inu, a characteristic Japanese dog breed, suffered from both C-IVDH and TL-IVDH, although there was little data relating to the whole breed. Male dogs tended to suffer from C-IVDH and TL-IVDH at a rate almost twice that of females in Japan. Among the three predominant dog breeds, the Dachshund, Beagle and Shih Tzu, the Dachshund tended to suffer from both C-IVDH and TL-IVDH at an earlier age than the Beagle, and the Beagle tended to suffer from both C-IVDH and TL-IVDH earlier than the Shih Tzu. Among the three predominant breeds, the Shih Tzu, in particular, tended to suffer from both C-IVDH and TL-IVDH at multiple sites. Our data from Japan were in partial agreement with previous data from the U.S.A., and epidemiological characteristics of IVDH peculiar to Japan were also identified.
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                pvb
                Pesquisa Veterinária Brasileira
                Pesq. Vet. Bras.
                Colégio Brasileiro de Patologia Animal - CBPA. Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA) (Rio de Janeiro, RJ, Brazil )
                0100-736X
                1678-5150
                August 2017
                : 37
                : 8
                : 835-839
                Affiliations
                Londrina Paraná orgnameUniversidade Estadual de Londrina orgdiv1Departamento de Clínicas Veterinárias Brazil
                Santa Maria Rio Grande do Sul orgnameUniversidade Federal de Santa Maria orgdiv1CCR orgdiv2Departamento de Clínica de Pequenos Animais Brazil
                Santa Maria Rio Grande do Sul orgnameUniversidade Federal de Santa Maria orgdiv1Centro de Ciências Rurais Brazil
                Canoas Rio Grande do Sul orgnameUniversidade Luterana do Brasil Brazil
                Article
                S0100-736X2017000800835
                10.1590/s0100-736x2017000800009

                This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

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