Atrioventricular Nodal Re-entry tachycardia (AVNRT)
- By sahlhealth
- May 18, 2021
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Atrioventricular Nodal Re-entry Tachycardia (AVNRT) is the most common type of Supraventricular Tachycardia. Episodes often start and end suddenly, and occur because of a re-entrant circuit â€” also called an accessory pathway â€” located in or near the AV node that causes the heart to beat prematurely. AVNRT tends to occur more often in young women, but it can affect both males and females of any age.
- Symptoms can be severe and include chest pain often described as a fullness in the chest, neck, or throat associated with palpitations. Syncope can occur with AVNRT but this is uncommon. A key feature is abrupt onset and termination of the tachycardia and hence the signs and symptoms.
-Most people with Atrioventricular Nodal Re-entry Tachycardia do not require medical treatment. However, if you experience prolonged or frequent episodes, your doctor may recommend or try:
- Vagal maneuvers. You may be able to stop an episode of AVNRT by using particular maneuvers that include holding your breath and straining, dunking your face in ice water, or coughing.
- Cardioversion. If you're unable to stop an episode on your own using vagal maneuvers, your doctor may use cardioversion, which can be conducted as a procedure or by using medications.
- Medications. If you experience frequent episodes of AVNRT, your doctor may prescribe medication to control your heart rate or restore a normal heart rhythm.
- Catheter ablation. In this procedure, your doctor threads one or more catheters through your blood vessels to your heart. Electrodes at the catheter tips can use heat, extreme cold or radiofrequency energy to damage (ablate) a small spot of heart tissue and create an electrical block along the pathway that's causing your arrhythmia.