Treatment

Most people with supraventricular tachycardia do not require medical treatment. However, if you have long or frequent episodes, your doctor may recommend the following:

• Carotid sinus massage. A doctor applies gentle pressure on the neck where the carotid artery splits into two branches. During this type of massage, the body releases chemicals that slow the heart rate. Don't attempt to do this on your own.
• Vagal maneuvers. You may be able to stop an episode of SVT by using particular movements such as holding your breath and straining as you would during a bowel movement, dunking your face in ice water, or coughing. These maneuvers affect the nervous system that controls your heartbeat (vagus nerves), often causing your heart rate to slow.

• Cardioversion. If you're unable to stop an episode of SVT on your own using vagal maneuvers, your doctor may use cardioversion. Cardioversion may be done using medications or during a heart procedure.

  In the procedure, a shock is delivered to your heart through paddles or patches on your chest. The current affects the electrical signals in your heart and can restore a normal rhythm.

• Medications. If you have frequent episodes of SVT, your doctor may prescribe medication to control your heart rate or restore a normal heart rhythm. It's very important to take the medication exactly as directed by your doctor in order to reduce complications.
• Catheter ablation. In this procedure, the doctor inserts thin, flexible tubes called catheters through the veins or arteries, usually in the groin. Sensors on the tip of the catheter use heat or cold energy to create tiny scars in your heart to block abnormal electrical signals and restore a normal heartbeat.
• Pacemaker. Rarely, a small, implantable device called a pacemaker is used to stimulate your heart to beat at a normal rate. The pacemaker is placed under the skin near the collarbone in a minor surgical procedure. A wire connects the device to your heart.