The section discusses the anatomical and physiological functions of the cardiac electrical system and compares pathophysiology, clinical manifestations, and nursing care of various cardiac dysrhythmia...The section discusses the anatomical and physiological functions of the cardiac electrical system and compares pathophysiology, clinical manifestations, and nursing care of various cardiac dysrhythmias, including bradycardic, tachycardic, ectopic beats, heart blocks, atrial fibrillation, atrial flutter, ventricular tachycardia, and ventricular fibrillation.