Electrocardiography (ECG or EKG) is the process of recording the electrical activity of the heart over a period of time using electrodes placed on the skin. These electrodes detect the tiny electrical changes on the skin that arise from the heart muscles electrophysiologic pattern of depolarizing and repolarizing during each heartbeat.ST Depression indicates Angina Diagrams below indicate which part the heart is being affected and what lead would show the changes.
The electrocardiogram is a recording of the electrical activity of the heart as it undergoes excitation (depolarization) and recovery (polarization) to initiate each beat of the heart.Learn everything about ECG leads electrodes and different lead systems. The 12-lead ECG including limb leads and precordial (chest) leads are discussed. Includes a complete e-book video lectures clinical management guidelines and much more.Principles of the cardiac action potential automaticity refractoryness electrical vectors ECG leads ant wavesforms are discussed in this article.
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