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Atrial Fibrillation
Atrial fibrillation is also called A-fib or atrial fib. This is an abnormal heart
rhythm.

The heart’s rhythm is controlled by electrical signals in the heart. The sinus
node
sends electrical signals to the rest of the heart. These signals cause the
heart to contract and pump blood. Normally, the heart contracts and relaxes
at a regular rate. With atrial fib, the sinus node does not start the electrical
signal. Signals come from other spots in the right or left atrium. This causes
the heart to beat irregularly and at times very fast.
Signs of Atrial Fib

• Irregular heart beat
• The feeling of rapid thumping inside the chest called heart palpitations
• Shortness of breath
• Tire easily with activity
• Feel faint, dizzy or lightheaded