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The experience and clinical effects of atrial fibrillation (AF) treatment by using circumferential pulmonary vein electrical isolation, 3-dimensional rotational angiography (3DRA) reconstructing left atrium and pulmonary veins of left atrial 3DRA with DynaCT Cardiac technique and superposition as well as merge with real-time fluoroscopy images and in combination with Carto electro-anatomical mapping guiding are retrospectively analyzed and evaluated.
Eighty-one cases of patients with atrial fibrillation were treated by radiofrequency ablation. Twenty-nine patients (A group) were operated with Carto guiding alone. Fifty-two patients (B group) were operated with DynaCT Cardiac 3DRA technique in combination with Carto systemic guiding. Among ablation, all patients in B group were treated with DynaCT Cardiac technique for 3DRA reconstruction left atrium and pulmonary vein. Three-dimensional left atrium and pulmonary vein image separated and superposed with real-time fluoroscopy images used for guiding the ablation catheter locating. The ablation endpoint was pulmonary vein isolation (PVI) to form bidirectional electrical conduction block.
For two groups of AF patients undergoing radiofrequency ablation of PVI treatment, all parents reached the operation endpoint. For patients in Group B, the operation time and X-ray exposure time were less than that of Group A, and the total success rate, effective rate, success rate and effective rate of paroxysmal AF were superior to that of Group A (P<0.05 or 0.01). For persistent AF, the success rate and effective rate of two groups were no significant different (P>0.05, respectively).
Compared with the simple application of Carto systemic, 3DRA technique combined with Carto systemic is helpful to short the operation time of AF ablation and reduce the X-ray exposure time, and improve the success rate and effective rate.