Why is atrial fibrillation dangerous?

Many patients live with the arrhythmia for decades without problems. However, if not treated, atrial fibrillation can lead to complications, such as stroke and heart failure, that can have serious consequences in your life.

• Risk for heart failure
• Risk for stroke

---

FREQUENTLY ASKED QUESTIONS

How does AFib increase stroke risk?

AFib can cause blood to pool in the atria, leading to the formation of blood clots that may travel to the brain, causing a stroke.

Can untreated AFib lead to heart failure?

Yes, prolonged AFib can weaken the heart and impair its ability to pump blood effectively, leading to heart failure.

What are the warning signs of a stroke in AFib patients?

Sudden numbness, confusion, trouble speaking, vision problems, or weakness on one side of the body are warning signs.

Can AFib cause other health complications?

Yes, it can lead to chronic fatigue, reduced exercise tolerance, and other quality-of-life issues.

Is the risk of AFib-related complications the same for all patients?

No, the risk varies depending on factors like age, other medical conditions, and overall health.

The content for this website for patients has been reviewed by Dr. Heather Edwards (nominated by the British Heart Rhythm Society (BHRS)).

---

Related Pages

• Fatigue
• Breathlessness
• Fainting, Dizziness, and Blackouts
• Palpitations
• Chest pain
• Fluttering
• How common is atrial fibrillation?
• Who is at higher risk for atrial fibrillation?
• How does it feel to have atrial fibrillation?