An electric shock to the heart (electrical cardioversion) may be needed if you are having severe symptoms of supraventricular tachycardia and your heart rate does not return to normal using vagal maneuvers or fast-acting medicines.

If you continue to have episodes that cause serious symptoms, a procedure called catheter ablation may be done during an electrophysiology (EP) study. During an EP study, the extra electrical pathway or cells in the heart that are causing the fast heart rate can often be identified and destroyed using catheter ablation.

Heart Problems: Should I Have Catheter Ablation?

Other treatment choices

• Electrical cardioversion
• Catheter ablation