AVB_3
Technical documentation
Third-Degree (Complete) AV Block
No P waves reach the ventricles: atria and ventricles beat completely independently (complete AV dissociation). Sinus P waves march through the tracing with constantly varying PR intervals. Prognosis depends on the escape rhythm: junctional escape gives narrow QRS at 40-60 bpm; ventricular escape gives wide QRS at 20-40 bpm and is unstable.
Also known as: Third-Degree (Complete) AV Block · bloqueo AV completo · BAV completo · BAV 3 · bloqueo AV de 3.er grado · bloqueo AV de tercer grado · bloqueo auriculoventricular completo · disociacion AV · complete heart block · third-degree AV block · complete AV block
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 | Bloqueo |
| Impulse origin | Sinoatrial node (SA node) |
| Modeled rate | 25–50 bpm (default 40) |
| Regularity | Regular |
| P wave | Dissociated from QRS |
| QRS duration | 110 ms |
| QRS morphology | Normal (narrow) |
| AV conduction | Atrioventricular dissociation |
| Severity | Life-threatening |
Which leads should be evaluated?
The catalog marks as primary diagnostic leads II, V1. Complete AV dissociation: regular atrial rate independent of slower ventricular escape rate.
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 Third-Degree (Complete) AV Block identified on the 12-lead ECG?
No P waves reach the ventricles: atria and ventricles beat completely independently (complete AV dissociation). Sinus P waves march through the tracing with constantly varying PR intervals. Prognosis depends on the escape rhythm: junctional escape gives narrow QRS at 40-60 bpm; ventricular escape gives wide QRS at 20-40 bpm and is unstable. 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, V1. Complete AV dissociation: regular atrial rate independent of slower ventricular escape rate. 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 SA_NODE, mediated by bloqueo.
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=AVB_3
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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Surawicz B, Childers R, Deal BJ, et al. (2009). "AHA/ACCF/HRS recommendations for the standardization and interpretation of the electrocardiogram: Part III: Intraventricular conduction disturbances". Circulation.