An electrocardiogram (ECG; in German, the electrokardiogram, EKG) is a measure of how the electrical activity of the heart changes over time as action potentials propagate throughout the heart during each cardiac cycle. However, this is not a direct measure of the cellular depolarization and repolarization with the heart, but rather the relative, cumulative magnitude of populations of cells eliciting changes in their membrane potentials at a given point in time; it shows electrical differences across the heart when depolarization and repolarization of these atrial and ventricular cells occur. © 2005 Humana Press Inc.
CITATION STYLE
Dupre, A., Vincent, S., & Iaizzo, P. A. (2005). Basic ECG theory, recordings, and interpretation. In Handbook of Cardiac Anatomy, Physiology, and Devices (pp. 191–201). Humana Press. https://doi.org/10.1007/978-1-59259-835-9_15
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