Importance: Patients with early-onset atrial fibrillation (AF) are enriched for rare variants in cardiomyopathy and arrhythmia genes. The clinical significance of these rare variants in patients with early-onset AF is unknown.
Objective: To assess the association between rare variants in cardiomyopathy and arrhythmia genes detected in patients with early-onset AF and time to death.
We describe a case of myocarditis associated with a brown recluse spider bite in a 31-year-old man. Cardiac magnetic resonance revealed late gadolinium enhancement in the lateral wall and inferior wall. There was also regional elevation of the myocardial T2 and extracellular volume indicative of myocardial edema.
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