Role of the tricuspid annulus and the eustachian valve/ridge on atrial flutter. Relevance to catheter ablation of the septal isthmus and a new technique for rapid identification of ablation success.

@article{Nakagawa1996RoleOT,
  title={Role of the tricuspid annulus and the eustachian valve/ridge on atrial flutter. Relevance to catheter ablation of the septal isthmus and a new technique for rapid identification of ablation success.},
  author={Hiroshi Nakagawa and Ralph Lazzara and T Khastgir and Karen J. Beckman and James H McClelland and Shinobu Imai and Jan V Pitha and Anton E. Becker and Maria de Lourdes Silva Arruda and M. J. Gonz{\'a}lez and Lawrence E. Widman and Maria Rom{\'e} and Jan Neuhauser and Xiao-Li Wang and James Daniel Calame and Marie Goudeau and Warren M. Jackman},
  journal={Circulation},
  year={1996},
  volume={94 3},
  pages={407-24}
}
BACKGROUND Typical atrial flutter (AFL) results from right atrial reentry by propagation through an isthmus between the inferior vena cava (IVC) and tricuspid annulus (TA). We postulated that the eustachian valve and ridge (EVR) forms a line of conduction block between the IVC and coronary sinus (CS) ostium and forms a second isthmus (septal isthmus) between the TA and CS ostium. METHODS AND RESULTS Endocardial mapping in 30 patients with AFL demonstrated atrial activation around the TA in… CONTINUE READING
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