A Study in Frontal Plane Vectorballistocardiography
Frontal plane ballistocardiograms obtained from 10 normal subjects were analyzed and compared with abnormal records obtained from patients with known cardiovascular disease. The normal vector loop is described, and the importance of the transverse ballistocardiogram is discussed. It is suggested that the orientation of the J loop may be related to the anatomic position of the heart. No such relationship was noted with the frontal plane H, I or K vector loops.
- © 1955 American Heart Association, Inc.