When the heartbeat becomes irregular, the heart may not pump blood as efficiently as normal. This can allow blood to pool in the heart and increase the risk of blood clots.

Common Symptoms

Symptoms of atrial fibrillation may include:

• irregular or rapid heartbeat
• palpitations or fluttering sensation in the chest
• fatigue or reduced exercise tolerance
• shortness of breath
• dizziness or light-headedness
• chest discomfort

Some people may not notice any symptoms and the condition may be detected during routine medical examinations.

Possible Causes

Atrial fibrillation can develop due to a variety of factors affecting the heart. Common contributing factors include high blood pressure, coronary artery disease, heart valve problems, thyroid disorders and excessive alcohol use. Age and other chronic health conditions can also increase the risk.

Reference

Content adapted from information provided by the Public Health Agency of Canada:https://www.canada.ca/en/public-health/services/diseases/heart-health/atrial-fibrillation.html