Spatial Magnitude, Orientation, and Velocity of the Normal and Abnormal QRS Complex

摘要: Curves of spatial magnitude, orientation, and velocity the QRS complex were obtained by digital computation from 252 normal 328 abnormal orthogonal electrocardiograms (Frank system). An attempt was made to evaluate diagnostic usefulness this type data display. Because interindividual variability in duration it not possible compare accurately individual records with standards. Normalization time was, therefore, necessary dividing each 10 equal parts. Mean curves computed for control group eight pathologic entities. Although differences configuration between various groups became evident, a large overlap ranges prevented an efficient classification purposes. A point-by-point separation showed high recognition rates abnormalities without specific classification. The highest information content appeared be present...