Analysis of 174 ventricular premature beats, 172 retrograde P waves and 36 ventricular echoes with reference to atrial echoes through the S-A node.
D000328:Adult; D001341:Autonomic Nervous System / Q000503:physiopathology; D004562:Electrocardiography; D005260:Female; D006325:Heart Atria / Q000503:physiopathology; D006331:Heart Diseases / Q000503:physiopathology; D006352:Heart Ventricles / Q000503:physiopathology; D006801:Humans; D009449:Neurocirculatory Asthenia / Q000503:physiopathology; D012849:Sinoatrial Node / Q000503:physiopathology*