title: Premature atrial stimulation as a key to the understanding of sinoatrial conduction in man. Presentation of data and critical review of the literature.
mesh_terms: D000200:Action Potentials; D000368:Aged; D001919:Bradycardia / Q000503:physiopathology; D004562:Electrocardiography; D006325:Heart Atria; D006327:Heart Block / Q000503:physiopathology*; D006329:Heart Conduction System / Q000503:physiopathology*; D006334:Heart Function Tests; D006801:Humans; D008722:Methods; D008875:Middle Aged; D010138:Pacemaker, Artificial; D013575:Syncope / Q000503:physiopathology