- By Dana Sparks
Freezing Heart Muscle to Stop the Racing (pkg)
Atrial fibrillation is a common heart rhythm problem experienced by millions of people. It’s when your heart races, causing dizziness, shortness of breath and fatigue. It also increases your risk of stroke. At Mayo Clinic surgeons are using a treatment for atrial fibrillation. They’re freezing heart muscle to stop the racing. [TRT 2:05]
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