Key result
Acute influenza A infection triggers transient complete atrioventricular block in the absence of myocarditis.
Why the study?
A spectrum of cardiovascular complications is associated with influenza infection through direct viral effects on the myocardium or exacerbation of existing cardiovascular disease, prompting this report of transient complete atrioventricular block without myocarditis following influenza A.
Case Report (n=1)
No
May prompt influenza testing in unexplained transient AV block; single case leaves open incidence and causality.
Influenza is one of the most common respiratory viral infections, causing annual epidemics of respiratory illnesses characterized by sudden onset of fever, malaise, myalgias, cough, and other respiratory complaints. A spectrum of cardiovascular complications has also been reported in association with influenza infection. Cardiovascular involvement can occur through the direct effects of the virus on the myocardium or through the exacerbation of the existing cardiovascular disease. We report the case of an 86-year-old woman without a history of cardiac disease before admission who developed a transient complete atrioventricular block without myocarditis after acute infection with the influenza A virus.
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Cheng et al. (2021) conducted a case report in Transient complete atrioventricular block associated with acute Influenza A virus infection (n=1). Acute influenza A virus infection was evaluated on Transient complete atrioventricular block without myocarditis. Acute influenza A virus infection resulted in transient complete atrioventricular block without myocarditis in an 86-year-old woman with no prior cardiac history.
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