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Sudden Cardiac Arrest (SCA) occurs abruptly and without warning when the heart's electrical system malfunctions. SCA is different from a heart attack which occurs when a blockage in a blood vessel interrupts the flow of oxygen-rich blood to the heart. A Microvolt T-Wave Alternans (MTWA) test can help determine if a patient is at risk for Sudden Cardiac Arrest. A Life-Saving Difference: Learn How the MTWA Test Saved One Man’s Life
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