Theodorakis, G N The effectiveness of beta-blockade and its influence on heart rate variability in vasovagal patients. [electronic resource] - European heart journal Nov 1993 - 1499-507 p. digital Publication Type: Clinical Trial; Journal Article ISSN: 0195-668X Standard No.: 10.1093/eurheartj/14.11.1499 doi Subjects--Topical Terms: Administration, OralAdolescentAdultAgedFemaleFollow-Up StudiesHeart Rate--drug effectsHumansMaleMiddle AgedPosturePropranolol--administration & dosageSyncope--drug therapyVagus Nerve--physiopathology