Медицинская анимация. Мерцательная аритмия

The normal heartbeat begins with electrical impulses from the sinoatrial, or SA node, a group of specialized pacemaker cells in the right atrium. These impulses cause the atria to contract and push blood into the ventricles. The impulse travels down to a junction called atrioventricular, or AV node, it then moves to the ventricles, which contract and pump blood out to the lungs and the rest of the body. In people with atrial fibrillation, a chaotic electrical signal in the upper part of the heart produ