The Role and Significance of Atrial ECG Components in Standard and Modified Lead Systems

摘要

Comparative study between Standard limb lead system (SLL) and Modified limb lead system (MLL) was carried out in this paper. Electrocardiograms (ECG) of Forty-five female subjects were recorded in sinus rhythm with SLL and MLL for 60 s with the help of EDAN SE-1010 PC ECG system. In MLL system, the amplitudes of P wave increased and the amplitude of ventricular components reduced. In PR interval atrial repolarization wave (Ta) wave was noticed and it is opposite to direction of P wave. There were no changes observed in durations of ECG wave. The MLL system with observable Ta wave improves the diagnosis of arrhythmias and atrial related diseases. The developed MLL system provides significant information related to atrial components. This study shows that MLL system is an alternate lead system to provide detailed information about atrial components of ECG.