| http://www.w3.org/ns/prov#value | - The heart is a complex organ and has back up modes , it just does not fail or go into a deadly rhythm that easy, increased or complex PVC activity can be a harbinger of more serious ventricular arrhythmias in persons with certain cardiac syndromes, coronary heart disease or other significant structural abnormalities, a scar , or some other reentry circuit in the ventricle is usually needed to sup
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