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Inicio Medicina Clínica (English Edition) Interatrial blocks: Diagnosis and clinical significance
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Vol. 155. Issue 5.
Pages 207-214 (September 2020)
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Vol. 155. Issue 5.
Pages 207-214 (September 2020)
Review
DOI: 10.1016/j.medcle.2020.03.008
Interatrial blocks: Diagnosis and clinical significance
Bloqueos interauriculares: diagnóstico y significado clínico
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Raimundo Carmona Puerta
Servicio de Electrofisiología Cardiaca y Arritmología, Cardiocentro de Santa Clara “Ernesto Guevara”, Santa Clara, Villa Clara, Cuba
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Abstract

In 1979 Bayés de Luna described interatrial blocks (IAB). Following the same principle of classification of blocks in other structures of the heart, he divided them into first (partial IAB), second (atrial aberrancy) and third degree (advanced IAB). Atypical forms of these blocks were recently described. There is evidence that delays or blocks of conduction in the Bachmann bundle constitute the mechanistic basis of these blocks. The association between IAB, mainly those of advanced grade, and atrial tachyarrhythmias is already constituted science, and is referred to by the medical community as Bayés syndrome. IABs are also associated with the occurrence of ischaemic stroke and recurrence of atrial fibrillation in several scenarios. This review presents classical aspects and sheds light on the interpretation of this electrocardiographic pattern in clinical practice.

Keywords:
Interatrial blocks
Electrocardiogram
Bachmann bundle
Resumen

En 1979 Bayés de Luna describió los bloqueos interauriculares (BIA). Siguiendo el mismo principio de clasificación de los bloqueos en otras estructuras del corazón los dividió en primero (BIA parcial), segundo (aberrancia auricular) y tercer grado (BIA avanzado). Recientemente se describieron sus formas atípicas. Se cuenta con evidencias de que los retrasos o bloqueos de la conducción en el haz de Bachmann constituyen la base mecanística de dichos bloqueos. La asociación entre BIA, principalmente los de grado avanzado, y taquiarritmias auriculares ya es ciencia constituida, y es denominado por la comunidad médica como síndrome de Bayés. Los BIA también se asocian a la aparición de infarto cerebral isquémico y recurrencia de fibrilación auricular en varios escenarios. La presente revisión repasa aspectos clásicos y da luz sobre la interpretación de este patrón electrocardiográfico en la práctica clínica.

Palabras clave:
Bloqueos interauriculares
Electrocardiograma
Haz de Bachmann

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