Tag : oxygen-rich blood

Heart Attack or Sudden Cardiac Arrest: How Are They Different?

A heart attack occurs when a blocked artery prevents oxygen-rich blood from reaching a section of the heart. If the blocked artery is not reopened quickly, the part of the heart normally nourished by that artery begins to die. The longer a person goes without treatment, the greater the damage. Symptoms of a heart attack may […]

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Systolic dysfunction (or systolic heart failure) occurs when the heart muscle doesn’t contract with enough force, so there is less oxygen-rich blood that is pumped throughout the body. Diastolic dysfunction (or diastolic heart failure) occurs when the heart contracts normally, but the ventricles do not relax properly or are stiff, and less blood enters the heart during normal […]

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