NREMT Paramedic

Answer: C -Ventricular fibrillation is the most common cause of sudden cardiac arrest. Other cardiac rhythms can cause cardiac arrest but they are not as common as ventricular fibrillation. “Fibrillation” refers to quivering resulting from uncoordinated contraction of the “fibrils” making up a muscle. When ventricular muscle fibrillates, circulation is interrupted, resulting in cardiac arrest.