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Biomédica

versão impressa ISSN 0120-4157

Resumo

SILVA, Edwin et al. Fulminant myocarditis due to the influenza B virus in adults: Report of two cases and literature review. Biomédica [online]. 2019, vol.39, suppl.2, pp.11-19. ISSN 0120-4157.  http://dx.doi.org/10.7705/biomedica.v39i3.4645.

Myocarditis is an inflammatory disease of the myocardium. Viral infections are the most common cause, although it can also be due to hypersensitivity reactions and autoimmune etiology, among other causes.

The clinical spectrum of the disease is varied, from an asymptomatic course, followed by chest pain, arrhythmias, and acute heart failure, to a fulminant episode. The term fulminant refers to the development of cardiogenic shock with a need for vasopressor support and inotropic or assisted circulation devices either extracorporeal membrane oxygenation (ECMO) or intra-aortic counterpulsation balloon.

About 10% of cases of heart failure due to myocarditis correspond to fulminant myocarditis. Influenza myocarditis has been considered an infrequent condition. However, its incidence has increased since 2009 as a result of the AH1N1 pandemic; otherwise, myocarditis due to the Influenza type B virus remains an infrequent entity.

We describe the experience in a cardiovascular center of two confirmed cases of fulminant myocarditis due to influenza B that required circulatory assistance devices.

Palavras-chave : Myocarditis; influenza B virus; adult; shock, cardiogenic; intra-aortic balloon pumping; extracorporeal membrane oxygenation; assisted circulation.

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