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TRABALHOS ORIGINAIS

Dissecção e rotura da artéria pulmonar associada a persistência do canal arterial: relato de um caso

Mabel de Moura Barros Zamorano

DOI: 10.1590/S0102-76381987000200009

RESUMO

É descrito um caso de dissecção da artéria pulmonar, com rotura intrapericárdica e tamponamento cardíaco, em menina de 13 anos de idade, portadora de canal arterial grande e valva pulmonar bicúspide. Havia hipertensão pulmonar com arteriopatia plexogênica grave; nas grandes artérias elásticas, a camada média tinha alterações necróticas e reparadoras profundas. Discute-se o papel da medionecrose, condição que é exacerbada pela hipertensão e por características individuais, na patogenia do aneurisma dissecante e no caso em questão. A análise da literatura mostra que, na artéria pulmonar, a dissecção é sempre um acidente fatal, por rotura ou obstrução arterial. O tratamento desta intercorrência, eminentemente cirúrgico, raramente é possível, devido ao caráter fulminante da evolução e à ausência de sinais definidos para o diagnóstico em tempo hábil.

ABSTRACT

The author presents a case of a 13-year old girl with pulmonary trunk dissection and rupture with a cardiac tamponade. There was a ductus arteriosus persistent and a non stenotic bicuspid pulmonary valve. A plexogenic pulmonary arteriopathy and severe process of injury and repair in the elastic vessels are present. The significance of medionecrosis in the pathogenesis ot pulmonary dissection is discussed. An analysis of reports in dissecting pulmonary aneurysm reveals a fatal outcome in the vast majority of them, due either to arterial rupture or obstruction.
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Article receive on sexta-feira, 31 de julho de 1987

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