Bifascicular block
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| Bifascicular block | |
|---|---|
| Classification and external resources | |
Right bundle branch block with first degree AV block. |
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| ICD-10 | I45.2 |
| ICD-9 | 426.53 |
Bifascicular block is a conduction abnormality in the heart where two of the three main fascicles of the His/Purkinje system are blocked.
Most commonly, it refers to a combination of right bundle branch block (RBBB) and either left anterior fascicular block (LAFB) or left posterior fascicular block (LPFB), with the former being more common.[1]
Some authors consider left bundle branch block (LBBB) to be a technical bifascicular block, since the block occurs above the bifurcation of the left anterior and left posterior fascicles of the left bundle branch.
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[edit] Treatment
In those with bifasciular block and no symptoms little with respect to treatment is needed. In those with syncope a pacemaker is recommended.
[edit] Image
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Bifascicular block on an electrocardiogram.
[edit] References
[edit] External links
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