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Mecanismos patogênicos, função ventricular e biópsia endomiocárdica na miocardiopatia dilatada / Pathogenic mechanisms, ventricular function and endomyocardial biopsy in dilated cardiomyopathy
Mattos, Beatriz Piva e.
  • Mattos, Beatriz Piva e; Hospital de Clínicas de Porto Alegre. Serviço de Cardiologia. Porto Alegre. BR
Article in Portuguese | LILACS | ID: lil-695706
RESUMO
A miocardiopatia dilatada é uma doença de caráter complexo e multifatorial, em que infecções virais, mecanismos auto-imunes e fatores genéticos produzem lesão miocárdica definitiva. É diagnosticada habitualmente na forma avançada, na qual determina severo comprometimento da função sistólica do ventrículo esquerdo e manifestações clínicas de insuficiência cardíaca. Pode ser identificada em forma inicial, caracterizada pela ausência de sinais congestivos e leve disfunção sistólica. Distúrbios do enchimento diastólico do ventrículo esquerdo são evidenciados em ambas as formas. A biópsia endomiocárdica identifica alterações histopatológicas, as quais não se correlacionam com o grau de comprometimento da função ventricular esquerda.
ABSTRACT
Dilated cardiomyopathy is a complex and multifactorial disease, in which viral infections, autoimmune mechanisms and genetic factors cause permanent myocardial damage. It is usually diagnosed in advanced forms, in which it determines severe impairment of the left ventricular systolic function and clinical signs of heart failure. It may be identified at an early stage, characterized by the absence of congestive signs and mild systolic dysfunction. Left ventricular diastolic filling abnormalities are found in both clinical forms. The endomyocardial biopsy shows histopathologic abnormalities that do not correlate with the degree of left ventricular function impairment.
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Index: LILACS (Americas) Main subject: Biopsy / Cardiomyopathy, Dilated / Ventricular Function Type of study: Prognostic study Language: Portuguese Journal: Rev. HCPA & Fac. Med. Univ. Fed. Rio Gd. do Sul Journal subject: Medicine Year: 2005 Type: Article Affiliation country: Brazil Institution/Affiliation country: Hospital de Clínicas de Porto Alegre/BR

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Index: LILACS (Americas) Main subject: Biopsy / Cardiomyopathy, Dilated / Ventricular Function Type of study: Prognostic study Language: Portuguese Journal: Rev. HCPA & Fac. Med. Univ. Fed. Rio Gd. do Sul Journal subject: Medicine Year: 2005 Type: Article Affiliation country: Brazil Institution/Affiliation country: Hospital de Clínicas de Porto Alegre/BR