In this course, we teach you the basic science underlying the generation of the 12 lead ECG readout. We explain how the conduction of cardiac depolarization and the pattern of cellular repolarization during the cardiac cycle generate a voltage of fluctuating magnitude and direction at the center of the chest. We show you how the ECG, a galvanometer, records the magnitude and direction of this voltage. We explain Einthoven’s law and Einthoven’s triangle. We explain the nature of Wilsons central terminal. We explain the difference between the bipolar frontal leads and the unipolar chest leads.
Planner and Author: Dr John Seery MB PhD
Planner: Dr Karen Strahan PhD (University of Cambridge), Head of Editorial
Planner: Tommy O'Sullivan, CME Manager
Upon successful completion of this activity, you will be able to:
Participants must complete the online activity during the valid period as noted above.
Follow these steps:
Planners and faculty for this activity have no relevant financial relationships with commercial interests to disclose.
Waller AD. A demonstration on man of electromotive changes accompanying the heart’s beat. J Physiol. 1887;8(5):229-34.
Einthoven W. Die galvanometrische Registrirung des menschlichen Elektrokardiogramms, zugleich eine Beurtheilung der Anwendung des Capillar-Elektrometers in der Physiologie. Pflügers Arch ges Physiol. 1903; 99: 472-80.
Wilson FN et al. Electrocardiograms that represent the potential variations of a single electrode. Am Heart J. 1934; 9: 447-58.
Wiggers CJ. Willem Einthoven (1860 – 1927): Some Facets of his Life and Work. Circ Res. 1961;9:225-34.
Acadoodle, Ltd is accredited by the Accreditation Council for Continuing Medical Education (ACCME) to provide continuing medical education for physicians.
Acadoodle, Ltd designates this enduring material activity for a maximum of 2.0 AMA PRA Category 1 Credits™. Physicians should claim only the credit commensurate with the extent of their participation in the activity.