Wenckebach pattern in right bundle branch block - benign or not?
J Electrocardiol
; 50(2): 223-226, 2017.
Article
em En
| MEDLINE
| ID: mdl-28340894
A Mobitz type I block (Wenckebach phenomenon) with narrow QRS complex is almost always due to a lesion in the AV node. In a type I block with wide QRS complex (>0.12sec), the block can be in the His-Purkinje system in 60-70% of the cases. Even though the progressive PR prolongation with every conducted beat suggests Wenckebach phenomenon, one needs to pay attention to the accompanying QRS complex. In the setting of persistent right bundle branch block, axis change of subsequent conducted beat before an unconducted p suggests alternating fascicular block, giving clue to unreliable infra-Hisian conduction; and in the setting of symptoms, a pacemaker should be implanted. Infra-Hisian Wenckebach block is rare with only sparse literature reports. The present case report adds to these, suggesting that wide QRS with Wenckebach block on surface ECG may indicate infra-Hisian conduction abnormalities.
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Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Bloqueio de Ramo
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Eletrocardiografia
Tipo de estudo:
Diagnostic_studies
Limite:
Aged
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Humans
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Male
Idioma:
En
Revista:
J Electrocardiol
Ano de publicação:
2017
Tipo de documento:
Article