Current ECG Aspects of Interatrial Block
Interatrial blocks like other types of block may be of first degree or partial second degree, also named transient atrial block or atrial aberrancy, and third degree or advanced. In first degree, partial interatrial block (P-IAB), the electrical impulse is conducted to the left atrium, through the B...
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doaj-7377c0bd71c54dcf92d22518b65151e92021-09-26T00:15:26ZengMDPI AGHearts2673-38462021-09-0123341943210.3390/hearts2030033Current ECG Aspects of Interatrial BlockAntoni Bayés-de-Luna0Miquel Fiol-Sala1Manuel Martínez-Sellés2Adrian Baranchuk3Cardiovascular Research Foundation, Cardiovascular ICCC- Program, Research Institute Hospital de la Santa Creu i Sant Pau, IIB-Sant Pau, 08025 Barcelona, SpainIlles Balears Health Research Institut (IdISBa), Hospital Son Espases, 07120 Palma, SpainCardiology Department, Hospital General Universitario Gregorio Marañón, Calle Doctor Esquerdo, 46, 28007 Madrid, SpainDepartment of Cardiology, Queen’s University, Kingston, ON K7L 3N6, CanadaInteratrial blocks like other types of block may be of first degree or partial second degree, also named transient atrial block or atrial aberrancy, and third degree or advanced. In first degree, partial interatrial block (P-IAB), the electrical impulse is conducted to the left atrium, through the Bachmann’s region, but with delay. The ECG shows a P-wave ≥ 120 ms. In third-degree, advanced interatrial block (A-IAB), the electrical impulse is blocked in the upper part of the interatrial septum (Bachmann region); the breakthrough to LA has to be performed retrogradely from the AV junction zone. This explains the p ± in leads II, III and aVF. In typical cases of A-IAB, the P-wave morphology is biphasic (±) in leads II, III and aVF, because the left atrium is activated retrogradely and, therefore, the last part of the atrial activation falls in the negative hemifield of leads II, III and aVF. Recently, some atypical cases of A-IAB have been described. The presence of A-IAB is a risk factor for atrial fibrillation, stroke, dementia, and premature death.https://www.mdpi.com/2673-3846/2/3/33interatrial blockpartial interatrial blockadvanced interatrial blockatypical patterns |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Antoni Bayés-de-Luna Miquel Fiol-Sala Manuel Martínez-Sellés Adrian Baranchuk |
spellingShingle |
Antoni Bayés-de-Luna Miquel Fiol-Sala Manuel Martínez-Sellés Adrian Baranchuk Current ECG Aspects of Interatrial Block Hearts interatrial block partial interatrial block advanced interatrial block atypical patterns |
author_facet |
Antoni Bayés-de-Luna Miquel Fiol-Sala Manuel Martínez-Sellés Adrian Baranchuk |
author_sort |
Antoni Bayés-de-Luna |
title |
Current ECG Aspects of Interatrial Block |
title_short |
Current ECG Aspects of Interatrial Block |
title_full |
Current ECG Aspects of Interatrial Block |
title_fullStr |
Current ECG Aspects of Interatrial Block |
title_full_unstemmed |
Current ECG Aspects of Interatrial Block |
title_sort |
current ecg aspects of interatrial block |
publisher |
MDPI AG |
series |
Hearts |
issn |
2673-3846 |
publishDate |
2021-09-01 |
description |
Interatrial blocks like other types of block may be of first degree or partial second degree, also named transient atrial block or atrial aberrancy, and third degree or advanced. In first degree, partial interatrial block (P-IAB), the electrical impulse is conducted to the left atrium, through the Bachmann’s region, but with delay. The ECG shows a P-wave ≥ 120 ms. In third-degree, advanced interatrial block (A-IAB), the electrical impulse is blocked in the upper part of the interatrial septum (Bachmann region); the breakthrough to LA has to be performed retrogradely from the AV junction zone. This explains the p ± in leads II, III and aVF. In typical cases of A-IAB, the P-wave morphology is biphasic (±) in leads II, III and aVF, because the left atrium is activated retrogradely and, therefore, the last part of the atrial activation falls in the negative hemifield of leads II, III and aVF. Recently, some atypical cases of A-IAB have been described. The presence of A-IAB is a risk factor for atrial fibrillation, stroke, dementia, and premature death. |
topic |
interatrial block partial interatrial block advanced interatrial block atypical patterns |
url |
https://www.mdpi.com/2673-3846/2/3/33 |
work_keys_str_mv |
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