Atrioventricular Nodal Reentrant Tachycardia: Causes, Symptoms, and Treatment
Medically reviewed by Harsha Moole, MD, Internal Medicine. Last reviewed: October 2, 2026.
What kind of doctor treats Atrioventricular Nodal Reentrant Tachycardia?
A cardiologist usually treats AVNRT. Many patients see an electrophysiologist, a cardiologist with extra training in heart rhythm problems. A primary care doctor often makes the first diagnosis and refers the patient to a specialist. A direct primary care or concierge doctor can be a first stop for an evaluation and can refer you to a specialist when needed.
What it is
Atrioventricular nodal reentrant tachycardia, or AVNRT, is a fast heartbeat that starts in the AV node, a tiny relay station for the heart's electrical signals. In AVNRT, an electrical signal loops back on itself, and each loop makes the heart squeeze again, so the heart can suddenly beat 150 to 250 times per minute. Episodes often start and stop without warning, and the condition is usually not dangerous, though it can be frightening.
Symptoms
The main symptom is a sudden racing or pounding heartbeat that starts and stops quickly. Many people describe a fluttering feeling in the chest or neck. Some also feel lightheaded, anxious, or short of breath.
Causes and who gets it
AVNRT happens when the electrical signal travels in a loop inside the AV node, usually because of two extra pathways some people are born with. It is common in otherwise healthy young adults and affects women more often than men. Caffeine, stress, alcohol, or certain medicines can trigger episodes.
How doctors diagnose it
Doctors start with a symptom history and physical exam. An electrocardiogram, or ECG, can catch the fast rhythm during an episode. Because episodes come and go, doctors often use a wearable heart monitor for a day or longer.
Treatment
Some episodes stop on their own, or a person can end them with vagal maneuvers, simple actions like bearing down or coughing. If those do not work, a doctor can give medicine or use a controlled electrical shock. For frequent episodes, catheter ablation can often cure AVNRT by blocking the loop inside the AV node.
When to see a doctor
See a doctor if you have sudden episodes of racing heartbeat, even if they stop on their own. Seek emergency care right away if an episode comes with chest pain, fainting, or severe shortness of breath.
How a direct primary care or concierge doctor fits in
A direct primary care doctor charges a flat monthly fee instead of billing insurance; a concierge doctor usually charges more and often works alongside insurance. These doctors have longer visits and can order heart monitors, teach vagal maneuvers, and manage simple cases or daily medicines. If the diagnosis is unclear or ablation might be needed, they will refer you to a specialist and coordinate follow-up care.
Common questions
Is AVNRT dangerous?
For most people, AVNRT is not life threatening, and the heart usually returns to a normal rhythm on its own or with simple actions. Still, chest pain, fainting, or severe shortness of breath during an episode requires emergency care.
Can AVNRT go away on its own?
Some people have fewer episodes over time, but the extra pathway usually stays, and episodes often continue unless treated. Catheter ablation usually stops the problem permanently.
What does an episode feel like?
Most people feel a sudden racing or pounding in the chest, sometimes with fluttering in the neck, lightheadedness, or trouble catching your breath. The episode often stops as suddenly as it started.
Can I stop an episode at home?
Many people can stop an episode by bearing down, coughing firmly, or applying a cold cloth to the face. A doctor should show you how to do these safely. If they do not work, seek medical care.
Sources
Medical Disclaimer
This content is for general educational and informational purposes only and is not medical advice. It is not a substitute for professional medical advice, diagnosis, or treatment, and reading it does not create a doctor-patient relationship. Always seek the advice of your physician or another qualified health provider with any questions about a medical condition, and never disregard or delay seeking professional advice because of something you read here. If you think you may have a medical emergency, call 911 (or your local emergency number) immediately.
