Symptoms of supraventricular tachycardia, or SVT, include palpitations, sweating, lightheadedness, a hammering pulse and shortness of breath, according to WebMD. Other symptoms may include fainting, chest pain and a tightness in the throat. Some people with SVT do not experience any symptoms.
Supraventricular tachycardia is a condition where the heart starts beating very fast, most likely due to a malfunction of its electrical system, explains WebMD. This is not the same as the normal elevated heartbeat that a person feels as a result of exercise, stress or a fever. While a normal heart beats at 60 to 100 beats per minute, the heart of patients suffering from SVT may go up to 300 beats per minute. Certain medications, surgery, health problems, genes or faulty electrical connections of the heart may cause the rapid heartbeat.
Treatment for SVT includes medication and slowing the heart rate with vagal maneuvers such as coughing and gagging, explains WebMD. A sufferer may also examine her lifestyle for SVT triggers to avoid, such as alcohol, cigarettes and illegal drugs. In serious or chronic cases, doctors may recommend daily medication, electrical cardioversion to reset the heart's rhythm or a catheter ablation to destroy the problematic part of the heart.