There they record electrical signals from inside the heart. During this study, the heart can be stimulated to beat rapidly or irregularly. The heart's response and the way the electricity moves around the heart during an arrhythmia helps the cardiologist diagnose the cause and nature of an arrhythmia. This is the most common type of abnormal tachycardia in young adults. Symptoms include palpitations, chest pains, upset stomach, decreased appetite, lightheadedness or weakness.
Some people can learn techniques to slow down their heart rate.
Straining, such as closing the nose and mouth and trying to breathe out, may work. This is known as a Valsalva maneuver. Once the rhythm returns to normal, proper therapy with drugs can usually prevent future episodes. Patients often need an EP study and can have a radiofrequency ablation to cure the problem. Atrial tachycardia, sometimes called atrial flutter or atrial fibrillation, is a particular type of SVT seen in young adults.