Waveform vector analysis of orthogonal electrocardiograms: Quantification and data reduction

Quantification of vectorcardiogram (VCG) analysis by waveform vector analysis (WVA) provides a more stable data base for computer analysis of P, ST and T vectors than does polar-cardiography. Furthermore, compared with data bases composed of Cartesian or polar coordinates of ‘instantaneous’ vectors, it reduces the data and also reduces noise by smoothing. This method is applicable to electrocardiogram (ECG) analysis also.