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(Chest. 1967;52:490-494.)
© 1967 American College of Chest Physicians

Digitalis as an Indicant of Ventricular Disease

Louis Lemberg M.D., F.C.C.P.1; Robert J. Boucek M.D.2; Agustin Castellanos Jr. M.D.3; and Jesus E. Fonseca M.D.4

1 Associate Professor of Medicine, University of Miami School of Medicine; Chief, Division of Electrophysiology, Jackson Memorial Hospital
2 Professor of Medicine and Chief, Section of Cardiology, University of Miami School of Medicine, Senior Investigator, Laboratories for Cardiovascular Research, Howard Hughes Medical Institute
3 Assistant Professor of Medicine, University of Miami School of Medicine; Cardiologist, Veterans Administration Hospital, Coral Gables
4 University of Miami School of Medicine

Digitalization can serve as an indicant of ventricular disease. After digoxin, the maximal T vector was displaced more anteriorly in hypertensive patients (left ventricular disease), whereas it tended to be displaced more posteriorly in cases of mitral stenosis (right ventricular disease).

A highly specific directional J vector pointing posteriorly and to the right in the horizontal plane was present in patients with left ventricular disease. Digitalization thus significantly enhances the electrocardiographic diagnosis of rheumatic mitral valve disease through its specific effect on repolarization events best seen in those leads reflecting the potential variations of the epicardial surface of the right ventricle.






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Copyright © 1967 by the American College of Chest Physicians.