SCA most often occurs in people with heart disease, especially those with heart failure who've had a heart attack. But a family history of sudden cardiac death or being of African American descent can raise your risk.
Dr. Walter Clair is an associate Professor of Medicine at Vanderbilt University Medical Center and leads the Heart Rhythm Society Initiative.
He says, "there are many people, particularly the young, who have normal coronary arteries, no blockages whatsoever and yet they're still at risk for sudden cardiac arrest. "
Signs you could be at risk of sudden cardiac arrest include heart flutter, chest discomfort, shortness of breath, and passing out.
SCA is caused by an irregular heart rhythm in contrast to a heart attack, which is caused by clogged arteries.
For more information on sudden cardiac arrest, go to www.arresttherisk.org.