Supraventricular Tachycardia Ablation

What is Supraventricular Tachycardia (SVT)?

In some hearts, an abnormal heart rhythm develops in the top part of the heart when an electrical impulse either starts from a different location other than the SA node, or follows a route (or pathway) that is not normally present. When this occurs the heart will suddenly start racing. The heart rate is usually over 150 beats per minute and often over 200 beats per minute. Certain things in some people can trigger episodes. These include caffeine, alcohol, anxiety, exercise or sudden movements such as bending over.

However, often these episodes can occur at any time without a trigger. During an episode, you will usually be aware of the rapid beating of your heart. Other symptoms might include dizziness (blacking out may occur but is unusual), shortness of breath, sweating, chest pain and anxiety. After an episode it is usual to feel very tired.

Is Supraventricular Tachycardia dangerous?

In the vast majority of cases SVT is a benign condition. This means that it will not cause sudden death, damage the heart or cause a heart attack. It will not shorten life expectancy. There are some rare exceptions that will be discussed with you if relevant.