AVRT_ORTHO
Technical documentation
Orthodromic AV Reentrant Tachycardia
Paroxysmal SVT in patients with an accessory pathway (Kent bundle). The circuit conducts anterogradely through the normal AV node/His-Purkinje system (narrow QRS) and retrogradely through the accessory pathway. Retrograde P waves appear in the ST segment or early T wave with RP < PR (short-RP SVT).
Also known as: Orthodromic AV Reentrant Tachycardia · taquicardia ortodromica · reentrada AV ortodromica · TRAV ortodromica · taquicardia por reentrada AV ortodromica · orthodromic AVRT · orthodromic reciprocating tachycardia
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 | 140–250 bpm (default 175) |
| Regularity | Regular |
| P wave | Retrograde |
| QRS duration | 92 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 II, III, aVF. Retrograde P wave clearly separated after QRS with short RP interval in 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 Orthodromic AV Reentrant Tachycardia identified on the 12-lead ECG?
Paroxysmal SVT in patients with an accessory pathway (Kent bundle). The circuit conducts anterogradely through the normal AV node/His-Purkinje system (narrow QRS) and retrogradely through the accessory pathway. Retrograde P waves appear in the ST segment or early T wave with RP < PR (short-RP SVT). 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 II, III, aVF. Retrograde P wave clearly separated after QRS with short RP interval in 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=AVRT_ORTHO
Related entities
Other entities in the same category within the catalog:
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.