Atrial Fibrillation

About atrial fibrillation

Atrial Fibrillation (also known as AFib or AF) is a heart condition that causes irregular and often abnormally fast heart rate.

A normal heart rate should be regular and between 60 and 100 beats a minute when you're resting. In atrial fibrillation the heart rate is irregular and can sometimes be very fast. In some cases, it can be higher than 100 beats a minute. This can cause problems including;

  • dizziness
  • shortness of breath
  • tiredness

You may notice your heart having palpitations, pounding, fluttering or beating irregularly, often for a few seconds or in some cases a few minutes. Sometimes there are no symptoms and you may be unaware that you have an irregular heartbeat.

Find more information about symptoms of Atrial Fibrillation on the NHS website: