AVNRT
Technical documentation
AV Nodal Reentrant Tachycardia (Slow-Fast)
The most common paroxysmal supraventricular tachycardia in adults with normal hearts. A functional circuit within the AV node utilizes an anterograde slow pathway and retrograde fast pathway. Retrograde P waves are buried inside or immediately after the QRS, mimicking a pseudo-r' in V1 or pseudo-S in inferior leads.
Also known as: AV Nodal Reentrant Tachycardia (Slow-Fast) · taquicardia por reentrada intranodal · taquicardia intranodal · TRIN · AVNRT · AV nodal reentrant tachycardia · taquicardia supraventricular paroxistica · TPSV · SVT
What parameters does the model use?
The following values are applied by the simulation engine to this entity. They govern activation kinematics in the 3D model and the real-time synthesis of the 12-lead electrocardiogram.
What parameters does the model use?
| Parameter | Model value |
|---|---|
| Mechanism | Reentrada |
| Impulse origin | Atrioventricular node (AV node) |
| Modeled rate | 150–250 bpm (default 185) |
| Regularity | Regular |
| P wave | Retrograde |
| QRS duration | 90 ms |
| QRS morphology | Normal (narrow) |
| AV conduction | 1:1 AV conduction |
| Severity | Clinically significant |
Which leads should be evaluated?
The catalog marks as primary diagnostic leads V1, II, III, aVF. Pseudo-r' wave in V1 and pseudo-S waves in inferior leads (II, III, aVF).
In the simulator, these leads are highlighted on the 12-channel tracing and corresponding vectors are rendered on the 3D model, displaying electrical changes and anatomical origin simultaneously.
Frequently asked clinical questions
How is AV Nodal Reentrant Tachycardia (Slow-Fast) identified on the 12-lead ECG?
The most common paroxysmal supraventricular tachycardia in adults with normal hearts. A functional circuit within the AV node utilizes an anterograde slow pathway and retrograde fast pathway. Retrograde P waves are buried inside or immediately after the QRS, mimicking a pseudo-r' in V1 or pseudo-S in inferior leads. The characteristic diagnostic waveforms are generated in real time across the simulated 12-lead tracing.
Which leads are critical for diagnostic confirmation?
The primary diagnostic leads are V1, II, III, aVF. Pseudo-r' wave in V1 and pseudo-S waves in inferior leads (II, III, aVF). In the simulator, these channels highlight the correlation with anatomical vectors.
What is the underlying electrophysiological or anatomical mechanism?
It originates from altered conduction in the AV_NODE, mediated by reentrada.
How can this condition be explored in the 3D simulator?
MioAtlas offers direct deep-link reproducibility with preconfigured parameters, allowing full 3D cardiac rotation and lead vector inspection.
How do you open this configuration?
The simulator encodes its full state in the query string, providing a stable and reproducible URL:
https://mioatlas.com/simulador/en/?mode=conduction&arr=AVNRT
Related entities
Other entities in the same category within the catalog:
Related clinical comparisons
Sources and bibliographic references
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Anderson RH, Yanni J, Boyett MR, Chandler NJ, Dobrzynski H (2009). "The anatomy of the cardiac conduction system". Clin Anat.
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Kligfield P, Gettes LS, Bailey JJ, et al. (2007). "Recommendations for the standardization and interpretation of the electrocardiogram: Part I: The electrocardiogram and its technology". Circulation.
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Rautaharju PM, Surawicz B, Gettes LS, et al. (2009). "AHA/ACCF/HRS recommendations for the standardization and interpretation of the electrocardiogram: Part IV: The ST segment, T and U waves, and the QT interval". Circulation.