The heart has four areas, or chambers. During each heartbeat, the two upper chambers (atria) contract, followed by the two lower chambers (ventricles). This is directed by the heart's electrical system.
The electrical impulse begins in an area called the sinus node, located in the right atrium. When the sinus node fires, an impulse of electrical activity spreads through the right and left atria, causing them to contract, forcing blood into the ventricles.
Then the electrical impulses travel in...
In general, the extent to which you will need
specialized care will depend on how bad your symptoms are and how
complex your case is. Many people who have only mild symptoms or
whose arrhythmia is not causing other problems may continue to see their
primary care doctors for the ongoing management of the condition.
But some people with atrial fibrillation have severe symptoms and may
benefit from regular monitoring and treatment by a more specialized physician,
such as a: