AVNRT

Medical abbreviation · Cardiology

AVNRT stands for Atrioventricular nodal reentrant tachycardia, a cardiology abbreviation.

The most common form of paroxysmal SVT, caused by a reentry circuit using fast and slow pathways within or near the AV node. It is more frequent in women and often first appears in adolescence or young adulthood, causing a regular tachycardia typically between 150 and 250 beats per minute.

Example: EP study induced typical slow-fast AVNRT; slow-pathway ablation performed without complication.

Usage notes

The ECG may show a "pseudo r prime" in V1 or a pseudo-S wave in the inferior leads because retrograde P waves are buried at the end of the QRS. Slow-pathway ablation cures most patients, with a small risk, well under 1 percent, of damaging normal conduction and needing a pacemaker. AVRT differs by using an accessory pathway outside the node.

Related abbreviations

More cardiology abbreviations

• ARVC – Arrhythmogenic right ventricular cardiomyopathy
• AS – Aortic stenosis
• ASCVD – Atherosclerotic cardiovascular disease
• ASD – Atrial septal defect
• AV – Atrioventricular
• AVB – Atrioventricular block
• AVR – Aortic valve replacement
• AVRT – Atrioventricular reentrant tachycardia
• BAV – Bicuspid aortic valve
• BBB – Bundle branch block
• BiV – Biventricular
• BMS – Bare-metal stent

See all 229 cardiology abbreviations →

Edited by the AbbreviationList.com team. Spotted an error or a missing meaning? Contact us.

This entry is for general education and is not medical advice. Abbreviation use varies between institutions; always confirm in context.