Supraventricular Tachycardia Supraventricular tachycardia (SVT), occurs when electrical impulses above the heart’s ventricles (supraventricular) start to produce an abnormally rapid heart rhythm. A normal heart rate is considered to be between 60 to 100 beats per...
Atrial Fibrillation What is atrial fibrillation? Atrial fibrillation (AF) is a form of arrhythmia or heart rhythm disorder characterised by an irregular heartbeat. It occurs due to problems with the heart’s electrical activity and can cause symptoms such as...