You may have seen TV commercials with Barry Manilow and less famous senior citizens talking about AFib. That's shorthand for atrial fibrillation, the most common cause of irregular heartbeats. When you have AFib, the electrical signals to the upper chambers of your heart become disorganized. A healthy heart beats steadily for about 60 times a minute at rest. With AFib, that … [Read more...] about A Quick Guide to Atrial Fibrillation