A heart condition that causes an irregular and often abnormally fast heart rate. A normal heart rate should be regular and between 60 and 100 beats a minute when resting. In atrial fibrillation, the heart rate is irregular and can sometimes be very fast. In some cases, it can be considerably higher than 100 beats a minute.
Cookies on NICOR website. We’ve put some small files called cookies on your device to make our site work. We’d also like to use analytics cookies. These send information about how our site is used to a service called Google Analytics. We use this information to improve our site. Let us know if this is OK. We’ll use a cookie to save your choice and you can read more about your choices in our cookie policy.
You can change your preferences any time using the Change my preferences button.
