Survival and echocardiographic evaluation of dogs with idiopathic dilated cardiomyopathy treated with carvedilol

Sixty dogs with idiopathic dilated cardiomyopathy were randomly treated with traditional therapy - digitalis, diuretics, angiotensin-converting inhibitors - (group A) or treated with these drugs plus carvedilol (group B). Echocardiographic variables were measured before and after 3, 13, 26, and 52 w...

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Veröffentlicht in:Arquivo brasileiro de medicina veterinária e zootecnia 2010-06, Vol.62 (3), p.555-563
Hauptverfasser: Soares, E.C.(PROVET - Medicina Veterinária Diagnóstica), Pereira, G.G.(Faculdade de Medicina Veterinária e Zootecnia USP), Petrus, L.C, Leomil Neto, M, Yamaki, F.L, Larsson, M.H.M.A
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Sprache:eng
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Zusammenfassung:Sixty dogs with idiopathic dilated cardiomyopathy were randomly treated with traditional therapy - digitalis, diuretics, angiotensin-converting inhibitors - (group A) or treated with these drugs plus carvedilol (group B). Echocardiographic variables were measured before and after 3, 13, 26, and 52 weeks of treatment or until death. Comparisons between groups and time were performed. No significant differences between groups were found in the most of the echocardiographic variables. The left ventricular end-systolic diameter indexed to body surface area (LVESDi) increased significantly in the group A dogs compared to the group B animals. The survival of groups A and B dogs were not different (P-value=0.1137). In conclusion, the stability of the LVESDi observed in the group treated with carvedilol may represent the beneficial effect over the ventricular remodeling. Sessenta cães com cardiomiopatia dilatada idiopática receberam, aleatoriamente, tratamento convencional - digitálicos, diuréticos, inibidores da enzima conversora de angiotensina - (grupo A) ou esses fármacos mais carvedilol (grupo B). As variáveis ecocardiográficas foram avaliadas antes e depois de três, 13, 26 e 52 semanas de tratamento ou até o óbito. Não foram encontradas diferenças significativas entre os grupos de animais quanto à maioria das variáveis ecocardiográficas. O diâmetro sistólico final do ventrículo esquerdo indexado à superfície corpórea (DSVEi) aumentou de forma significativa no grupo A quando comparado ao grupo B. Não se observou diferença na sobrevida dos grupos A e B (P=0,1137). Concluiu-se que a estabilização do DSVEi no grupo tratado com carvedilol pode representar o efeito benéfico deste fármaco sobre o remodelamento ventricular.
ISSN:0102-0935
1678-4162
1678-4162
0102-0935
DOI:10.1590/S0102-09352010000300009