Digitalis toxicity.
D001145:Arrhythmias, Cardiac / Q000139:chemically induced; D004077:Digoxin / Q000009:adverse effects; D004562:Electrocardiography; D006333:Heart Failure / Q000188:drug therapy; D009729:Nursing; D010138:Pacemaker, Artificial; D011188:Potassium / Q000097:blood
D004077:Digoxin; D011188:Potassium