Euler, D E Sympathetic influences on electrical and mechanical alternans in the canine heart. [electronic resource] - Cardiovascular research Nov 1996 - 854-60 p. digital Publication Type: Journal Article; Research Support, Non-U.S. Gov't ISSN: 0008-6363 Subjects--Topical Terms: AnimalsCardiac Pacing, ArtificialDogsElectric StimulationElectrocardiographyFemaleHeart--drug effectsHeart AtriaMaleSympathetic Nervous System--physiologySympatholytics--pharmacologySystoleTimolol--pharmacologyVentricular Pressure--drug effects