has part has part has_part characteristic of abnormal impulse conducting system conduction abnormal heart electrocardiography waveform feature any anomaly in the pattern of the graphic record of the integrated action currents of the cardiac cycle represented as changes in voltage; the prominent waves in the ECG correspond to specific conduction activity in areas of the heart and the timing and amplitude of ECG waveforms provide valuable information about heart rate and rhythm MP:0010508 abnormal cardiac electrocardiography 2010-09-30T04:16:30Z abnormal ECG abnormal EKG abnormal heart ECG waveform features MPheno.ontology csmith myocardium