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Heart Attack is a medical emergency in which the supply of blood to the heart is suddenly and severely reduced or cut off, causing the muscle to die from lack of oxygen. More than 1.1 million people experience a heart attack each year, and for many of them, the attack is their first symptom of coronary artery disease.
Heart Failure occurs when the heart muscle fails to pump as much blood as the body needs. The faulty pumping means the body doesn't get the oxygen it needs, blood backs up in the veins and lungs and other changes occur that make the heart even weaker.
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