AV Nodal Reentrant Tachycardia with 2:1 AV Block
Korean Circulation Journal
;
: 389-395, 1994.
Artigo
em Coreano
| WPRIM
| ID: wpr-64386
ABSTRACT
BACKGROUND:
Second degree AV block is occasionally induced during AV nodal reentrant tachycardia by programmed electrical stimulation. This study was performed to determine the incidence, the block site, and the mechanism of AV block during AV nodal reentrant tachycardia. METHODS ANDRESULTS:
The study population was 67 consecutive patients with AV nodal reentrant tachycardia studied by programmed electrical stimulation. Among these patients, common types(slow pathway for anterograde and fast pathway for retrograde conduction) were 64 patients and uncommon types(fast pathway for anterograde and slow pathway for retrograde conduction) were 3 patients. Among 67 patients with AV nodal reentrant tachycardia 10 patients developed 21 AV block during tachycardia. The block site of AV block was infrai bundle in 9 patients and supraHis bundle in patient. There were intermittent aberrancies of RBBB and/or LBBB form during tachycardia in 5 patients with infraHis AV block.CONCLUSION:
The occurrence of AV block during AV nodal reentrant tachycardia is not rare and might be related to the prematurity of atrial extrastimulation. The block sites of AV block were infraHis bundle in most cases and this finding suggests that distal common pathway of the reentry circuit is present in the AV node.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Nó Atrioventricular
/
Taquicardia
/
Taquicardia por Reentrada no Nó Atrioventricular
/
Incidência
/
Estimulação Elétrica
/
Bloqueio Atrioventricular
Tipo de estudo:
Estudo de incidência
/
Estudo prognóstico
Limite:
Humanos
Idioma:
Coreano
Revista:
Korean Circulation Journal
Ano de publicação:
1994
Tipo de documento:
Artigo
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