The extent to which precordial and other unipolar leads are influenced by the proximity of the exploring electrode to one part or another of the heart is the subject of considerable debate. One approach to the problem is to determine how closely precordial leads can be predicted from spatial vectorcardiograms recorded by leads relatively remote from the heart. The panoramic vectors cardiograph ...

IT has become evident that much of the diagnostic information now obtained from precordial leads may be furnished by an adequate orthogonal lead system.' 3 This is innportant to the further development of diagInostic electrocardiography, since quantitative (lescription of only three variables has obvious advantages over the description of larger riunmbers of body surface leads. At present the o...

The extent to which precordial and other unipolar leads are influenced by the proximity of the exploring electrode to one part or another of the heart is the subject of considerable debate. One approach to the problem is to determine how closely precordial leads can be predicted from spatial vectorcardiograms recorded by leads relatively remote from the heart. The panoramic vectors cardiograph ...

The extent to which precordial and other unipolar leads are influenced by the proximity of the exploring electrode to one part or another of the heart is the subject of considerable debate. One approach to the problem is to determine how closely precordial leads can be predicted from spatial vectorcardiograms recorded by leads relatively remote from the heart. The panoramic vectors cardiograph ...

ii These results indicate that short IED bipolar leads provide a signal that is adequate for clinical use. Furthermore, the performance of these leads was shown to be similar or even superior to that of the commonly used standard leads. It can be concluded that when correctly positioned, short IED bipolar leads are useful and can give additional value for clinical diagnostics. These results pro...

L OW voltage of the QRS deflections in the standard limb leads has engaged the attention of many investigators since the early days of electrocardiography, and the significance attributed to it has undergone .many fluctuations. In recent years, since the use of precordial leads has become more widespread, various reports have appeared on low voltage occurring in these leads. Several attempts ha...