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Electrocardiogram would be most helpful in confirming the diagnosis.
Electrocardiogram
The procedure of electrocardiography involves creating an electrocardiogram, a recording of the electrical activity of the heart. Using electrodes positioned on the skin, an electrogram of the heart is created, which is a graph of voltage against time of the electrical activity of the heart. These electrodes pick up the minute electrical alterations brought on by the depolarization and repolarization of the cardiac muscle during each cardiac cycle (heartbeat). Numerous cardiac disorders, such as irregular heartbeat, insufficient coronary artery blood flow (including myocardial ischemia and myocardial infarction), and electrolyte problems, result in changes in the normal ECG pattern (such as hypokalemia and hyperkalemia).
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