What triggers an SVT episode?
Causes. There are different forms of supraventricular tachycardia (SVT), an abnormal fast heart rhythm. At times, thyroid disease, caffeine, medications with stimulants, or stress can cause an episode of SVT. The electrical signals travel along “pathways.” Some types of SVT involve a faulty electrical pathway.
Is an SVT life threatening?
Although most cases of SVT are not considered to be dangerous or life threatening, frequent episodes can weaken the cardiac muscle over time, and should therefore be addressed with medical intervention to prevent further complications. Other forms of SVT include atrial fibrillation (AF) and atrial flutter.
What does tachycardia feel like?
The most common symptom of tachycardia is palpitations — the feeling that the heart is racing or fluttering. Other symptoms sometimes include lightheadedness, shortness of breath and fatigue.
How do you diagnose SVT?
Supraventricular tachycardia is suspected when a doctor or nurse counts a very rapid heart rate (>200) during an attack. To confirm the diagnosis, your child’s pediatrician might perform an electrocardiogram (ECG – also known as EKG). An ECG is a test which records the electrical activity of the heart.