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La cartografía de activación y arrastre define el anillo tricúspide como la barrera anterior en el típico aleteo
J M Kalman1, J E Olgin, L A Saxon
1Department of Medicine, University of California, San Francisco 94143-1354, USA.
Circulation
|August 1, 1996
Resumen
El anillo tricúspide actúa como una barrera anterior continua en los circuitos típicos de aleteo auricular. Este hallazgo, basado en el mapeo de arrastre en pacientes humanos, aclara la anatomía de la reentrada del aleteo auricular.
Área de la Ciencia:
- Cardiología Cardiología.
- Electrofisiología y electrofisiología.
- La anatomía cardíaca anatomía cardíaca.
Sus antecedentes:
- Las barreras anatómicas son cruciales para los circuitos de reingreso del aleteo auricular.
- La crista terminalis y la cresta de Eustaquio forman una barrera posterior.
- Se planteó la hipótesis de que el papel del anillo tricúspide como una barrera anterior.
Objetivo del estudio:
- Para probar la hipótesis de que el anillo tricúspide forma una barrera anterior continua al circuito de aleteo auricular.
- Para investigar el papel del anillo tricúspide en el aleteo auricular humano.
Principales métodos:
- Se estudiaron 13 pacientes con el típico aleteo auricular.
- Utilizó catéteres de halo y mapeo para la activación y el mapeo de arrastre alrededor del anillo tricúspide y otros sitios auriculares.
- Sitios definidos dentro del circuito utilizando criterios de arrastre (intervalo de retraso - duración del ciclo de aleteo ≤ 10 ms).
Principales resultados:
- Los siete sitios mapeados alrededor del anillo tricúspide estaban dentro del circuito de aleteo.
- La activación se produjo secuencialmente alrededor del anillo, lo que representa toda la longitud del ciclo de aleteo.
- La fosa ovalis, el seno coronario y el apéndice auricular derecho estaban fuera del circuito.
Conclusiones:
- La activación secuencial alrededor del anillo tricúspide confirma su papel en el circuito de aleteo.
- El anillo tricúspide actúa como una barrera anterior continua para el aleteo auricular humano en el sentido contrario a las agujas del reloj.
- Los criterios de mapeo de entrenamiento validaron la función de barrera del anillo tricúspide.
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