Afib is the most common arrhythmia worldwide but there are others. Atrial flutter, which is initiated in the right atrium, is characterised by a rapid but regular heart rate, in contrast to Afib’s irregular rate. Like Afib, it presents a stroke risk.
Supraventricular tachycardia (SVT) is another common arrhythmia of which there are multiple variants, including Wolff–Parkinson–White syndrome. SVT symptoms include a very rapid heart rate, which can make you feel lightheaded and dizzy.
Afib, atrial flutter and SVT all occur in the upper chambers of the heart, are rarely fatal and can be treated.
Arrhythmias that originate in the lower chambers, such as ventricular tachycardia (VT), are dangerous and can result in sudden death, which is why it’s so important to have your heart checked out if it’s misbehaving.…