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2.ECG (electrocardiogram) is a test that measures the electrical activity of the heart. The heart is a muscular organ that beats in rhythm to pump the blood through the body.It is a good idea to have an ECG in the case of symptoms such as dyspnoea (difficulty in breathing), chest pain (angina), fainting, palpitations or when someone can feel that their own heart beat is abnormal.It depends on what is being measured. Usually, an ECG is taken while the patient is resting. But if there's concern that a patient's symptoms may be caused by coronary artery disease, the test is done while the patient is on an exercise bike or treadmill.
1.Antibodies are produced by white blood cells and used by the immune system to identify and attack foreign substances in the body. The ABO classification is the most important and relevant for blood compatibility. A small number of antigens and antibodies are responsible for the ABO blood types.
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