Luna Bhatta MD, talks about the causes and treatments of atrial fibrillation, an irregular and often rapid heart rate that commonly causes poor blood flow to the body and can put you at higher risk for a stroke. Symptoms can include heart palpitations, shortness of breath and weakness. Luna is the director of the Heart Rhythm Center and Clinical Cardiac Electrophysiology Lab at Upstate. For more information, call 315 464-5973.  Read the "What's Up at Upstate" blog: Reducing stroke risk in patients with atrial fibrillation