ALGORITHM FOR AUTOMATIC DETECTION OF ECG WAVES

摘要

An accurate measurement of the different electrocardiogram (ECG) intervals isndependent on the accurate identification of the beginning and the end of the P, QRS,nand T waves. Available commercial systems provide a good QRS detection accuracy.nHowever, the detection of the P and T waves remains a serious challenge due to theirnwidely differing morphologies in normal and abnormal beats. In this paper, a new algorithmnfor the detection of the QRS complex as well as for P and T waves identification isnprovided. The proposed algorithm is based on different approaches and methods such asnderivations, thresholding, and surface indicator. The proposed algorithm is tested andnevaluated on ECG signals from the universal MIT-BIH database. It shows a good abilitynto detect P, QRS, and T waves for different cases of ECG signal even in very noisy conditions.nThe obtained QRS, sensitivity and positive predictivity are respectively 95.39%nand 98.19%. The developed algorithm is also able to separate the overlapping P and Tnwaves