title: Lenient heart rate control may be as effective as strict control.  Patients with atrial fibrillation may experience similar outcomes and enjoy a similar quality of life with a less-rigid approach to rate control.
mesh_terms: D000889:Anti-Arrhythmia Agents / Q000627:therapeutic use; D001281:Atrial Fibrillation / Q000628:therapy*; D005080:Exercise Test; D017079:Exercise Tolerance; D015438:Health Behavior; D006333:Heart Failure / Q000517:prevention & control; D006339:Heart Rate; D006801:Humans; D011379:Prognosis; D011788:Quality of Life
chemical_list: D000889:Anti-Arrhythmia Agents