title: Echocardiographic correlates of atrial contraction in normal and abnormal atrial rhythm.
mesh_terms: D001145:Arrhythmias, Cardiac / Q000175:diagnosis*; D001281:Atrial Fibrillation / Q000175:diagnosis; D001282:Atrial Flutter / Q000175:diagnosis; D005117:Cardiac Complexes, Premature / Q000175:diagnosis; D002302:Cardiac Output; D004452:Echocardiography; D006327:Heart Block / Q000175:diagnosis; D006439:Hemodynamics; D006801:Humans; D009200:Myocardial Contraction; D012016:Reference Values