Abraham I. Schaffer

A prolonged QRS duration on surface electrocardiogram is a specific indicator of left ventricular dysfunction

Rachel L Murkofsky, George Dangas, Joseph A. Diamond et al. · Journal of the American College of Cardiology · 1998 · 191 citations

Electrophysiological Evaluation, Heart Failure, Device Therapy +9

The electrocardiographic exercise test

David Scherf, Abraham I. Schaffer · American Heart Journal · 1952 · 90 citations

Electrophysiological Evaluation, Physical Activity, Kinesiology +7

Procaine amide: its effect on auricular arrhythmias

Abraham I. Schaffer, S. Blumenfeld, Ernest R. Pitman et al. · American Heart Journal · 1951 · 29 citations

Neurophysiology, Procaine Amide, Medicine +8

The unipolar electrocardiogram of the newborn infant

Abraham I. Schaffer, Julius Burstein, Armond V. Mascia et al. · American Heart Journal · 1950 · 24 citations

Electrophysiological Evaluation, Neonatology, Pediatric Heart Disease +6

The vectorcardiogram of the newborn infant

Abraham I. Schaffer, William H. Beinfield · American Heart Journal · 1952 · 22 citations

Heart Failure, Neonatology, Newborn Infant +5