Paradoxical deceleration response of the S-A node to naturally occurring catecholamines given into the sinus node artery.
D000818:Animals; D001158:Arteries; D001285:Atropine / Q000494:pharmacology; D001775:Blood Circulation / Q000187:drug effects; D001783:Blood Flow Velocity; D002395:Catecholamines / Q000494:pharmacology*; D003331:Coronary Vessels; D003864:Depression, Chemical; D004285:Dogs; D004298:Dopamine / Q000494:pharmacology; D004837:Epinephrine / Q000494:pharmacology; D005260:Female; D006426:Hemicholinium 3 / Q000494:pharmacology; D006584:Hexamethonium Compounds / Q000494:pharmacology; D007269:Injections, Intra-Arterial; D007545:Isoproterenol / Q000494:pharmacology; D008297:Male; D009638:Norepinephrine / Q000494:pharmacology; D010643:Phenoxybenzamine / Q000494:pharmacology; D010830:Physostigmine / Q000494:pharmacology; D012849:Sinoatrial Node / Q000187:drug effects*; D014630:Vagus Nerve / Q000502:physiology
D002395:Catecholamines; D006584:Hexamethonium Compounds; D010643:Phenoxybenzamine; D006426:Hemicholinium 3; D001285:Atropine; D010830:Physostigmine; D007545:Isoproterenol; D004298:Dopamine; D009638:Norepinephrine; D004837:Epinephrine