Spatial Vector Electrocardiography
A Method for Calculating the Spatial Electrical Vectors of the Heart from Conventional Leads
A new method for the interpretation of conventional electrocardiographic leads is presented. It is based upon evidence that all body surface leads tend to record from the same resultant electrical forces. The various leads write different QRS and T contours in a given case, then, simply because the axis for each of the leads has a different direction in the electrical field and therefore registers different components of these electrical forces. The method has many advantages over "pattern" methods of interpretation. To illustrate its use, a study of QRS vectors is presented with special reference to the SlS2S3 pattern.
- © 1950 American Heart Association, Inc.