Unusual artifact in electrocardiography.
D000328:Adult; D001145:Arrhythmias, Cardiac / Q000175:diagnosis; D003937:Diagnosis, Differential; D003951:Diagnostic Errors; D004562:Electrocardiography; D005260:Female; D006801:Humans; D009207:Myoclonus / Q000175:diagnosis; D013610:Tachycardia / Q000175:diagnosis