Key result
Influenza A H1N1 infection is linked to acute reversible cardiomyopathy in adults.
Case Report
Influenza A (H1N1) infection should be considered as a potential cause of acute reversible cardiomyopathy in adults.
May warrant H1N1 testing in unexplained acute cardiomyopathy; hypothesis-generating and requires larger studies before practice change.
Cardiomyopathy refers to nonspecific myocardial dysfunction that may be due to a variety of causes. Viral illnesses have long been known to cause cardiomyopathy, and the list of viral causes is extensive. Influenza infection is a rare cause of myocarditis. Recent reports, however, indicate that influenza A (H1N1) can cause acute myocarditis and cardiomyopathy in adults and fulminant myocarditis in children as seen during the 2009 global outbreak of the H1N1 influenza virus. The following presents a case series of adult patients with acute reversible cardiomyopathy associated with influenza A (H1N1) infection (see Table 1 for patient characteristics).
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Barbandi et al. (2012) conducted a case report in Acute reversible cardiomyopathy. Influenza A (H1N1) infection was evaluated. Influenza A (H1N1) infection was identified as a cause of acute reversible cardiomyopathy in a series of adult patients.
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