Radiofrequency catheter oblation in atrial flutter / 介入放射学杂志

ABSTRACT

Objective To evaluate the radiofrequency catheter ablation for type I atrial flutter through application of Holo catheter labelling with anatomic imaging localization to ablate the isthmus of IVC TA during complete double way block.Methods Eleven cases with type I atrial flutter undergone Holo catheter labelling technique and consecution with conduction time change of coronary venous sinus orifice withright atrial lower lateral wall pace excitation ,were performed with radiofrequency catheter ablation for the isthmus outcoming with complete double way conduction block. Results All together 11 cases with 4 of atrial flutter and 7 of sinus rhythm were undergone radiofrequency catheter ablation resulting with double way conduction block of the isthmus accompanied by prolongation of right atrial conduction time 56.0?2.3ms and 53.0?4.6ms respectively.The right atrial excitation consecution during coronary venous sinus orifice and right atrial lower lateral wall pace excitation appeared to be in clockwise and counter clockwise of single direction. No recurrence occurred during 3-34 months follow up with only one showing atrial fibrollation.Conclusions The application of Holo catheter labelling technique with anatomic imaging localization to achrieve the double way conduction block by radiofrequency catheter ablation of TVC TA isthmus, is a reliable method for treating atrial flutter.