Correct. PACs are a: potential precursor of atrial fibrillation, though in the short term primarily due to conflicting autonomic orders from mind/brain→heart. A far more relevant driver of atrial fibrillation is: https://www.google.com/#q=atrial+fibrosis, a result of long-standing CVDs (though in only early stages of recognition by medical testing via MRIs before autopsy). Study my many answers on artery Disease.
Answered 6/10/2016
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