title: Prolonged repolarization: a historical perspective.
abstract: This symposium will more fully discuss QT prolongation--an area of controversy--prolonged QT syndromes, and new groups of agents that prolong repolarization and the QT interval (calcium blockers and antiarrhythmic agents). This is an important evolving field with old biases confronting a new and more thorough understanding of the phenomenon of prolonged repolarization.
mesh_terms: D000889:Anti-Arrhythmia Agents / Q000009:adverse effects; D001145:Arrhythmias, Cardiac / Q000209:etiology / Q000503:physiopathology*; D002493:Central Nervous System Diseases / Q000150:complications; D004562:Electrocardiography; D006325:Heart Atria / Q000503:physiopathology; D006352:Heart Ventricles / Q000503:physiopathology; D006801:Humans; D008659:Metabolic Diseases / Q000150:complications; D013610:Tachycardia / Q000150:complications
chemical_list: D000889:Anti-Arrhythmia Agents