AV Nodal Reentrant Tachycardia

Atrioventricular nodal reentrant tachycardia (AVNRT) is the most common paroxysmal SVT, due to dual pathways within the AV node. Clinical: regular narrow-complex tachycardia, abrupt onset/offset, palpitations. Treatment: acute - vagal maneuvers/adenosine/beta-blocker/CCB; prevention - beta-blocker/CCB/digoxin; catheter ablation of the slow pathway is curative for frequent/symptomatic.

Common Symptoms

Palpitations; regular narrow-complex tachycardia; abrupt onset/offset; young otherwise healthy patients

Causes and Pathogenesis

Dual AV-nodal pathways form a reentrant circuit causing regular SVT.

Treatment

Vagal/adenosine acute; beta-blocker/CCB; slow-pathway ablation curative

Preventive Measures

Ablation is curative; avoid stimulants.

Department to Visit

It is recommended to visit the Cardiology/EP department; an appointment can be booked on this platform before the visit.

Warm reminder: The above information is for health science reference only and cannot replace professional medical diagnosis. If you have related symptoms, please seek medical attention at a regular hospital promptly.