Electrocardiogram essay

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Thus to filter Baseline drift from ECG signal is important. The function of filter is to remove unwanted parts of the signal to extract useful parts of the signal. Introduction Electrocardiography ECG is the acquisition of electrical activity of the heart captured over time by an external electrode attached to the skin. Each of the cell membrane that form the outer covering of the heart cell have an associated charge which is depolarized during every heart beat. These appear as tiny electrical signals on the skin which can be detected and amplified by the ECG.
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The instrument that makes the record is the ECG machine or Electrocardiograph. Willem Einthoven invented it. It works by attaching electrodes to the outer surface of the skin. An electrocardiogram monitors the heart. Each beat of the heart is triggered by an electrical impulse, normally generated from special cells in the upper right chamber of the heart.
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The first electrocardiogram ECG from the intact human heart was recorded with a mercury capillary electrometer by Augustus Waller in May at St. Mary's Hospital, London. The tracings were poor and exhibited only 2 distorted deflections. Willem Einthoven who was professor of physiology at the University of Leiden, The Netherlands, began his studies of the ECG with the mercury capillary electrometer, and improved its distortion mathematically so that he was finally able to register a good representation of the ECG before the beginning of the twentieth century.
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So, what is an arrhythmia? An arrhythmia is a problem with the rate and rhythm of the heart. The heart can either beat too fast, too slow, or with an irregular rhythm. Arrhythmias can also cause the heart to inefficiently pump blood to the body and other organs which can lead to damage in the brain, heart, other organs and can ultimately lead to heart failure. Although most arrhythmias are non life threatening, they can develop into a serious problem.

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