Most cardiac arrhythmias are temporary and benign. Most temporary and benign arrhythmias are those where your heart skips a beat or has an extra beat. The occasional skip or extra beat is often caused by These occasional changes can be brought on by strong emotions or exercise. Nonetheless, some arrhythmias may be life-threatening and require treatment. Arrhythmias can be divided into two main categories ventricular and supraventricular .
Supraventricular arrhythmias occur in the heart's two upper chambers called the artium.
Ventricular arrhythmias occur in the heart's two lower chambers called the ventricles. A very slow heart rate is called bradycardia . In bradycardia, the heart rateis less than 60 beats per minute. A very fast heart rate is called Tachycardia meaning the heart beats faster than 100 beats per minute. A fast uncoordinated heart rate is called Fibrillation.