title: [Spontaneous variability of ventricular arrhythmias and evaluation of antiarrhythmic drug efficacy--studies evaluating the correlation between ventricular ectopic beat frequency and heart rate].
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000889:Anti-Arrhythmia Agents / Q000627:therapeutic use*; D005117:Cardiac Complexes, Premature / Q000188:drug therapy* / Q000503:physiopathology; D004341:Drug Evaluation; D004562:Electrocardiography; D005260:Female; D006339:Heart Rate; D006801:Humans; D008297:Male; D008875:Middle Aged; D008991:Monitoring, Physiologic
chemical_list: D000889:Anti-Arrhythmia Agents