A similar relationship was found between a left ventricular ejection fraction < 50%, increased mortality, and increased major adverse cardiovascular events.Myocarditis has been reported to be a major cause of sudden cardiac death (SCD) in infants, adolescents, and young adults, but the reported rates show wide variation (1 to 14 percent) among young people depending on differences in SCD definition and classification/ definition of myocarditis post-mortem as well as inhomogeneity in the study populations. And one has also to distinguish between studies about myocarditis in general and fulminant myocarditis. Epidemiology
The exact incidence of myocarditis is unknown since many cases are not associated with any symptoms. However, in series of routine autopsies, 1–9% of all patients had evidence of myocardial inflammation. The prevalence rate of myocarditis is estimated to be about 22 cases per 100,000 persons annually. Fulminant myocarditis, the most severe subtype, has been shown to occur in up to 2.5% of known myocarditis presentations. When looking at different causes of myocarditis, viral infection is the most prevalent, especially in children; however, the prevalence rate of myocarditis is often underestimated since the condition is easily overlooked. Viral myocarditis being an outcome of viral infection depends heavily on genetic host factors and the pathogenicity unique to the virus. If one tests positive for an acute viral infection, clinical developments have discovered that 1-5% of said population may show some form of myocarditis.In regard to the population affected, myocarditis is more common in pregnant women, children, and those who are immunocompromised.
The standard definition of convergence insufficiency is exophoria greater at near than at distance, a receded near point of convergence, and reduced convergence amplitudes at near. See also
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