Interpretation of complex demand pacemaker arrhythmias.
D000368:Aged; D001145:Arrhythmias, Cardiac; D004562:Electrocardiography; D004947:Esophagus; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010138:Pacemaker, Artificial; D013909:Thorax; D013997:Time Factors