title: [Therapy of extrasystole using substances blocking beta-receptors of the sympathetic nervous system].
mesh_terms: D005117:Cardiac Complexes, Premature / Q000188:drug therapy*; D004983:Ethanolamines / Q000627:therapeutic use*; D006801:Humans
chemical_list: D004983:Ethanolamines
vernacular_title: Terápia extrasystolie látkami blokujúcimi beta-receptory sympatiku.