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Arq. bras. cardiol ; 58(2): 91-94, fev. 1992. ilus, tab
Article in Portuguese | LILACS | ID: lil-120708

ABSTRACT

Objetivo - Estudar a valva mitral na cardiopatia chagásica crônica buscando eventual relaçäo entre causa e efeito com o prolapso daquele aparelho. Métodos - Dezessete coraçöes de indivíduos com cardiopatia chagásica crônica, sendo 11 do sexo masculino, idade entre 31 e 84 (média = 54) anos, resultantes de necrópsias realizadas até há um ano. As peças, devidamente conservadas, foram analisadas macro e microscopicamente. Foram retirados fragmentos dos músculos papilares da valva mitral, das regiöes anterior, lateral e posterior do ventrículo esquerdo, septo interventricular, parede livre de ventrículo direito e paredes dos átrios. Resultados - Miocardite crónica foi encontrada nos 17 casos (leve em 6, moderada em 7 e grave em 4). Também em todos os casos os músculos papilares apresentaram miocardite, sendo que, em 15 o grau de intensidade foi igual ou maior do que o observado nas outras regiöes do coraçäo. Conclusäo - Os músculos papilares da valva mitral säo sede muito freqüente de miocardite na cardiopatia chagásica crônica, fato que deve ser lembrado ao se discutir a patogênese do prolapso da mesma


Purpose- Studring the mitral valva in chronic Chagas' heart disease, searching a possible cause effect relationship between this condition and valve prolapse. Methods Seventeen hearts were surveged from individuals exhibiting chronic chagasic cardiopathy, 11 males and 6 females, aged between 31-84 (average 54) years. The hearts came from necropsies carried out until a year before. Properly preserved samples were analyzed macro and microscopicaly. Fragments were excised from the mitral valve papillary muscles, anterior, lateral and posterior regions of the left ventricle, interventricular septum, free wall of right ventricle and atrium walls. Results - Chronic myocarditis was found ill all the samples (mild in 6 of them, moderate in 7 and severe in 4). Also, the papillary muscles exhibited miocarditis in all of the samples, and in 15 of them the degree of severety was equal to or superior than the observed in degree other regions of the heart. Conclusion The chronic chagasic cardiopathy, the papillary muscle constitute afrequent site of myocardites. This fact must be held in mind when one discusses the pathogenesis of the prolapse of the valve


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Mitral Valve Prolapse/etiology , Chagas Cardiomyopathy/complications , Aged, 80 and over , Mitral Valve Prolapse/pathology , Chagas Cardiomyopathy/pathology , Papillary Muscles/pathology
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