title: The use of R-R interval and difference histograms in classifying disorders of sinus rhythm.
abstract: A data reduction technique is presented which enables the patterns of cardiac rhythm inherent in a long-term ECG recording to be described in a concise fashion. The method consists in combining an R-R interval difference histogram, which gives information about the detailed structure of cardiac rhythm patterns, with an R-R interval histogram, which concisely describes the trends in heart rate over a period. Example of the histogram patterns corresponding to some common cardiac rhythms are presented. The histograms can be treated mathematically to yield information which is useful in assessing the long-term effects of drugs and in classifying disorders of cardiac rhythm.
mesh_terms: D001146:Arrhythmia, Sinus / Q000145:classification / Q000175:diagnosis*; D001281:Atrial Fibrillation / Q000175:diagnosis / Q000188:drug therapy; D001341:Autonomic Nervous System; D002940:Circadian Rhythm; D003000:Clonidine / Q000627:therapeutic use; D003929:Diabetic Neuropathies / Q000175:diagnosis; D004562:Electrocardiography / Q000379:methods*; D006339:Heart Rate; D006801:Humans; D012848:Sinoatrial Block / Q000175:diagnosis
chemical_list: D003000:Clonidine