You might want to try:. For most people with supraventricular tachycardia, moderate amounts of caffeine do not trigger an episode of SVT. Large amounts of caffeine should be avoided, however. Consider keeping a diary to help identify your triggers.
Track your heart rate, symptoms and activity at the time of an SVT episode. Supraventricular tachycardia care at Mayo Clinic. Mayo Clinic does not endorse companies or products. Advertising revenue supports our not-for-profit mission. This content does not have an English version. This content does not have an Arabic version. Overview Supraventricular tachycardia SVT is as an abnormally fast or erratic heartbeat that affects the heart's upper chambers.
Request an Appointment at Mayo Clinic. Typical heartbeat Open pop-up dialog box Close. Typical heartbeat In a typical heart rhythm, a tiny cluster of cells at the sinus node sends out an electrical signal. Supraventricular tachycardia Open pop-up dialog box Close. Supraventricular tachycardia Supraventricular tachycardia is an abnormally fast heartbeat.
Share on: Facebook Twitter. Show references Brugada J, et al. European Heart Journal. National Heart, Lung, and Blood Institute. Accessed Feb. Riggin EA. Allscripts EPSi. Mayo Clinic. Ferri FF. Supraventricular tachycardia. In: Ferri's Clinical Advisor Elsevier; Accessed March 30, Zipes DP, et al.
Surgery for atrial fibrillation and other SVTs. Saul JP, et al. Most children with SVT lead a normal life. It's important to follow up with the cardiologist as often as needed. Reviewed by: Joel D. Temple, MD and Shashank P. Behere, MD. Larger text size Large text size Regular text size. How long episodes last and how often they happen is different for each person with SVT. Other symptoms might include: dizziness tiredness weakness shortness of breath chest pain fainting What Causes Supraventricular Tachycardia SVT?
Supraventricular tachycardia usually affects infants, young kids, and teens. These types of EKGs might be done: resting EKG , which measures the heart rate and rhythm, and takes less than a minute exercise EKG also called a stress test , which measures heart rate and rhythm during exercising, like riding a stationary bicycle or walking on a treadmill home monitor , which is an EKG done over a longer period. It monitors the heart's rhythm during normal daily activities.
Continuous recording usually 24 hours with a "Holter" monitor means the EKG is on for the entire monitoring period; event monitoring usually done for 30—60 days means data is recorded only when a child feels symptoms and presses a button, or when the monitor detects certain conditions. Many arrhythmias like SVT may not need treatment.
Supraventricular tachycardia is by far the most common heart arrhythmia seen in infants and children. There are many types of SVT, but the most common form in children occurs when there is an extra electrical connection between the top and bottom chambers of the heart, called an accessory electrical pathway. Supraventricular tachycardia virtually never causes sudden death. Patients with SVT usually do not have any symptoms when they are not having these attacks.
An ECG is a test which records the electrical activity of the heart. This is a type of ultrasound that captures moving pictures of the heart.
An ECG, echocardiogram and a physical exam are usually normal if they are performed after the tachycardia fast heartbeat stops, so it is important to obtain an ECG while your child is having the symptoms. An accurate ECG will allow for the correct diagnosis and appropriate treatment for your child. Your doctor may also refer your child to an electrophysiologist, a cardiologist who has additional education and training in the diagnosis and treatment of abnormal heart rhythms.
Supraventricular tachycardia episodes usually stop on their own. Many babies with SVT will outgrow the arrhythmia by their first birthday. For children who continue to have SVT symptoms, treatment may include:.
Older children can learn to do vagal maneuvers to try to slow or stop an episode of fast heart rate. Vagal maneuvers may include:. When tachycardia does not stop on its own or with vagal maneuvers, we may recommend a daily medication to prevent SVT from occurring.
While babies with supraventricular tachycardia commonly outgrow the arrhythmia, older children usually do not.
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