ABC Medical Center > AV nodal reentry tachycardia

What is AV nodal reentry tachycardia?

12:53 - 13 February , 2024


It is an alteration characterized by a heart rate that is faster than normal, above 100 beats per minute, which usually begins and ends suddenly, forcing the heart to work harder by having to pump more blood at a higher speed.

Atrioventricular nodal reentry tachycardia appears when electrical impulses from the heart move circularly and re-enter areas they have already passed through. It is the most common type of supraventricular tachycardia and occurs more frequently in young women.

It develops in the atrioventricular node, which is the connection point of the heart’s conduction system between the atria and ventricles. It slows down the cardiac impulse for a few thousandths of a second to give the atria time to contract before the ventricles do so.

Although its origin is unknown, atrioventricular nodal reentry tachycardia is caused by the presence of additional pathways in the atrioventricular node, which despite being present from birth, cause an arrhythmia after the heart has fully developed, i.e., when the person is between 20 and 30 years old.

Signs and symptoms AV nodal reentry tachycardia

Some people may not have symptoms, but the most common are:

  • Anxiety.
  • Daze.
  • Fainting.
  • Stress.
  • Strong pulsations in the neck.
  • Dizziness.
  • Nervousness.
  • Rapid and intense palpitations.
  • Difficulty breathing.
  • Feeling of discomfort in the chest.

Diagnosis and treatment AV nodal reentry tachycardia

Once the doctor analyzes your symptoms and clinical history, they will perform a physical examination and request various tests to confirm the diagnosis, including:

  • Electrocardiogram.
  • Holter monitor.
  • Event recorder.

People with atrioventricular tachycardia with nodal reentry generally do not require medical treatment unless they have regular or extended incidents, so they may need:

  • Medications to regulate heart rate or restore normal heart rhythm.
  • Catheter ablation.
  • Cardioversion, consists of applying an electrical shock to the heart to restore the normal heart rhythm.

Valsava maneuver to help stop an episode of atrioventricular nodal reentry tachycardia, either by holding your breath and straining or coughing, among others.

At the Cardiovascular Center, we offer you a wide range of prevention, diagnosis, timely treatment, and follow-up services to care for you through a comprehensive and multidisciplinary care model. Come to us, we want to hear your heart.


  • Carmona PR, Chávez GE, Mirella MJ. Taquicardia por reentrada del nodo aurículo-ventricular. CorSalud. 2013;5(1):108-119.
  • Iturralde TP, Colín LL, Guevara VM, et al. Experiencia en 1,500 pacientes sometidos a ablación con radiofrecuencia en el tratamiento de las taquicardias. Arch Cardiol Mex. 2000;70(4):349-356.

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