AVRT, or Atrial Ventricular Reentry Tachycardia, is a specific type of abnormal heart rhythm or arrhythmia that occurs in the heart's electrical system. It is characterized by a rapid, coordinated, and regular pattern of electrical signals that circulate in a loop between the heart's upper (atria) and lower chambers (ventricles).
During AVRT, an extra electrical pathway exists between the atria and ventricles, known as an accessory pathway. This abnormal pathway creates a short-circuit in the heart's electrical system, allowing electrical signals to bypass the normal conduction pathway and reenter the atria, stimulating the ventricles to contract prematurely. This leads to a faster heart rate and the onset of tachycardia.
Symptoms of AVRT can vary and may include palpitations, a rapid and irregular heartbeat, dizziness, shortness of breath, chest discomfort, and fainting. The severity of symptoms can differ depending on the individual's overall health and the rapidity of the heart rate during episodes.
Management and treatment options for AVRT typically involve drug therapies to control the heart rate, restore normal rhythm, or prevent arrhythmia recurrence. In some cases, radiofrequency catheter ablation may be recommended, which involves using a catheter to destroy the abnormal accessory pathway responsible for the reentry circuit. This procedure has a high success rate and can provide permanent relief from AVRT symptoms.
It is essential for individuals with AVRT to receive proper diagnosis, management, and follow-up care from a healthcare provider who specializes in heart conditions to ensure optimal heart health and quality of life.
