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Electrocardiography (ECG) is the procedure of producing an electrocardiogram (ECG or EKG). it’s far a graph of voltage versus time of the electrical pastime of the heart the use of electrodes positioned on the pores and skin. those electrodes detect the small electric changes that are a consequence of cardiac muscle depolarization accompanied with the aid of repolarization for the duration of every cardiac cycle (heartbeat). changes inside the ordinary ECG pattern occur in numerous cardiac abnormalities, inclusive of cardiac rhythm disturbances (consisting of atrial fibrillation and ventricular tachycardia), insufficient coronary artery blood float (inclusive of myocardial ischemia and myocardial infarction), and electrolyte disturbances (consisting of hypokalemia and hyperkalemia).
A blood test is a laboratory analysis performed on a blood sample that is usually extracted from a vein in the arm using a hypodermic needle. Multiple tests for specific blood components, such as a glucose test or a cholesterol test, are often grouped together into one test panel called a blood panel or blood work. Blood tests are often used in health care to determine physiological and biochemical states, such as disease, mineral content, pharmaceutical drug effectiveness, and organ function. Typical clinical blood panels include a basic metabolic panel or a complete blood count. Blood tests are also used in drug tests to detect drug abuse.
