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| Effect of zero-ray radiofrequency ablation under the guidance of three-dimensional mapping system in the treatment of atrioventricular nodal reentrant tachycardia |
| YAN Yifei1 LI Jinyi2▲ ZHONG Guoqiang2 HE Yan2 WEN Weiming2 ZHENG Mengbing2 WANG Lingling2 WANG An2 |
1.Department of Geriatrics, 303th Hospital of People's Liberation Army, Guangxi Zhuang Autonomous Region, Nanning 530021, China;
2.Department of Cardiology, the First Affiliated Hospital of Guangxi Medical University Guangxi Institute of Cardiovascular Diseases, Guangxi Zhuang Autonomous Region, Nanning 530021, China |
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Abstract Objective To compare feasibility, effectiveness and safety of zero-ray and conventional X-ray radiofrequency ablation under the guidance of Ensite system or CARTO 3 mapping system in the treatment of atrioventricular nodal reentrant tachycardia. Methods 82 patients with atrioventricular nodal reentrant tachycardia treated by radiofrequency catheter ablation in Department of Cardiology, the First Affiliated Hospital of Guangxi Medical University from January 2014 to April 2016 were selected. Patients were divided into three-dimensional group (42 patients) and conventional group (40 patients) according to whether or not X-ray performed during the mapping process. Puncture blood vessels and place the mapping electrode time, target mapping time, total discharge time, total operation time, X-ray exposure and exposure time, surgical complications and follow-up observation efficacy of two groups were compared. 42 patients of three dimensions group were divided into CARTO 3 (20 cases) and Ensite (22 cases) according to mapping system used in operation. Total operation time, the electrode time, the target time and the number of discharges of two mapping systems were compared. Results In three-dimensional group and conventional group, the immediate success rate was 100%, without any recurrence after operation. Target mapping time, total discharge time, total operation time, X-ray exposure and exposure time of three-dimensional group were significantly shorter than or lower than those of conventional group, the differences were statistically significant (P < 0.01). Two mapping systems was compared, total operation time, place the electrode time of Ensite were shorter than those of CARTO 3 (P < 0.05). There was no significant difference between target time and the number of discharges (P ＞ 0.05). Conclusion Zero-ray radiofrequency ablation under the guidance of three-dimensional anatomical mapping system in the treatment of atrioventricular nodal reentrant tachycardia with high success rate, no X-ray damage, has important clinical value.
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