Rydén, L Alprenolol as maintenance therapy for the protection against arrhythmia relapse in patients with DC-converted chronic atrial fibrillation. [electronic resource] - Acta medica Scandinavica - 43-8 p. digital Publication Type: Journal Article ISSN: 0001-6101 Subjects--Topical Terms: AdultAgedAlprenolol--administration & dosageAmino Alcohols--administration & dosageArrhythmias, Cardiac--drug therapyAtrial Fibrillation--drug therapyCardiac VolumeChronic DiseaseElectric CountershockFemaleHumansMaleMiddle AgedSympatholytics--administration & dosage