Atrial Fibrillation
Atrial Fibrillation
Causes, Symptoms, and Management Strategies

Atrial Fibrillation Q & A
What is Atrial Fibrillation?
The upper chambers of the heart, called the atria,
 normally pump immediately before the lower chambers, called ventricles. Synchronized by the heart’s electrical system, the chambers work together to create a constant movement of blood through the heart and lungs, and back to the body.
When your heart rhythm is irregular, blood moves slower and less efficiently, causing blood to pool and potentially clot. Blood clots can travel all over the body, including the brain, lungs, and heart muscle.
What causes Atrial Fibrillation?
Atrial fibrillation is caused by an interruption in the electrical pathway, which may be brought on by damage or strain placed on the heart.
Heart-related conditions that may cause A-fib include:
- Hypertension, or high blood pressure
- Heart valve disease
- Heart attack
- Heart surgery
- Coronary artery disease
- Congestive heart failure
Other possible causes may include:
- High thyroid levels
- Lung disease
- Pneumonia
- Surgery
- Excessive alcohol use, especially binge drinking
- Stimulants, such as caffeine, recreational drugs, or some medications

What are Symptoms of A-Fib?
- Shortness of breath
- Fatigue or tiring easily
- Racing or pounding heart rate
- Dizziness or fainting
- Heart palpitations
- Chest pain or discomfort
How is Atrial Fibrillation Treated?
Once your A-fib has been diagnosed, your Phoenix Heart provider may choose to simply monitor your rhythm regularly.
If your rate isn’t controlled, if you’re symptomatic, or if you have a higher risk of complications, treatment may include:
- Blood-thinning medications
- Rate-controlling medications
- Cardioversion or defibrillation, to shock the heart back into rhythm
- Catheter ablation, a procedure to fix the electrical pathways
- Internal pacemaker, to regulate cardiac rhythm
Your cardiologist takes time to answer your questions related to your risk and your options to treat atrial fibrillation.
For a consultation for your A-fib, call today or book an appointment online with Phoenix Heart.