AFib, which affects about 2.7 million Americans, is characterized by a quivering, fluttering or racing heartbeat, according to the American Heart Association. Symptoms can include fatigue, dizziness, shortness of breath, chest pain and feeling faint or confused. But sometimes there are no symptoms, and one-third of patients go undiagnosed, the American Stroke Association estimates.
AFib may cause blood to pool in the heart, forming clots that can break off and travel through the bloodstream to the brain, blocking off circulation. As a result, people who have frequent episodes are five times more likely than others to have a stroke, according to a 2011 study published in the Texas Heart Institute Journal.
His mom's AFib went untreated for years before her stroke, Waltrip says. That's why he isn't taking any chances with his own health or that of his two daughters or fans. He's soaked up all the information he can to raise awareness about the heart disorder.
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