JOSEPH WEINSTEIN, M.D.
Since the introduction of the string galvanometer by Einthoven1 in 1903, and the perfection of the modern electrocardiograph, a multitude of experiments were conducted to determine the most suitable points for the application of the electrodes, with the final acceptance of the three limb "leads" now universally adopted. The electrocardiograms thus produced have proved of invaluable assistance to the clinician in the study of cardiac irregularities and affections of the myocardium.
That this method has its limitations has been shown by the frequent occurrence of proved cases of coronary vessel occlusions where normal electrocardiograms were obtained. The reason is that
WEINSTEIN J. MULTI-PLANE CHEST ELECTROCARDIOGRAPHY: A STANDARDIZED METHOD OF CHEST LEAD APPLICATIONS1. Ann Intern Med. 1934;7:1503–1512. doi: 10.7326/0003-4819-7-12-1503
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Published: Ann Intern Med. 1934;7(12):1503-1512.
Cardiac Diagnosis and Imaging, Cardiology.
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