causes of heart fibrillation
An irregular pulse could be a sign that you have an abnormal heart rhythm. Atrial Fibrillation (AF) is one of the most common forms of abnormal heart rhythm and a major cause of stroke. Normally, your heartâs natural pacemaker sends out regular electrical impulses. AF happens when those impulses fire off from different places in the atria (the top chambers of the heart) in a disorganised way.