Supraventricular Tachycardia (SVT)

What is Supraventricular Tachycardia (SVT)?

Supraventricular Tachycardia (also referred to as SVT) describes a number of rapid heart rhythm disorders originating in the upper chambers of the heart. In supraventricular tachycardia, the heart rate is sped up by an abnormal electrical impulse starting in the atria. The​ heart beats so fast that it does not allow enough time for the heart to fill before it contracts, so blood flow to the rest of the body is compromised.

The most common types of SVT include paroxysmal atrial tachycardia (PAT) or paroxysmal supraventricular tachycardia (PSVT) and sinus tachycardia. For more information about supraventricular tachycardia, visit the American Heart Association.


What are the Symptoms of Supraventricular Tachycardia?

Supraventricular Tachycardia, whether severe or mild, may or may not cause noticeable symptoms. However, when symptoms of SVT occur, they may include:

  • Heart palpitations – pounding, fluttering or racing sensations in the chest
  • Pounding Pulse
  • Fatigue or Weakness – lack of energy or feeling over-tired
  • Dizziness – feeling dizzy or light-headed
  • Other symptoms include near-fainting or fainting (syncope), shortness of breath, chest discomfort, throat tightness, and sweating.

If you’re experiencing any of these symptoms, it’s important to seek evaluation and treatment from a healthcare expert experienced in arrhythmia management​. For more about the prevention, symptoms, and risk factors of SVT, visit the American Heart Association.


Managing Supraventricular Tachycardia (SVT)

When it comes to diagnosing and treating heart rhythm disorders, the Jeffrey M. Carlton Heart & Vascular Institute is a nationally recognized leader in comprehensive arrhythmia management​. With its exceptional team of physician experts and staff, progressive technology, and state-of-the-art facilities, Hoag continues to lead the way in comprehensive cardiovascular care both locally and nationwide.

Learn more about the Jeffrey M. Carlton Heart & Vascular Institute’s top-rated arrhythmia management program:

  • Experience and Outcomes
  • Physician Expertise
  • Innovative Technology & Treatment
  • State-of-the-Art Patient-Centered Care​​​​​