Tag: myocardial infarction
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Myocardial Infarction
A myocardial infarction (MI), also known as a heart attack, is a serious medical condition that occurs when the blood flow to a part of the heart is blocked, causing damage or death of heart muscle cells. The most common cause of a heart attack is a blockage in one of the coronary arteries, which…
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Electrocardiogram (ECG)
A typical heart beat on an electrocardiogram (ECG) consists of several components, including the P wave, the QRS complex, and the T wave. The P wave represents the electrical activity of the atria, the upper chambers of the heart, as they contract and pump blood into the ventricles, the lower chambers of the heart. The…