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Downloaded from http://heart.bmj.com/ on May 8, 2017 - Published by group.bmj.com Abstracts [gw22-e0609] ABLATION OF LEFT POSTERIOR FASCICULAR TACHYCARDIA DURING SINUS RHYTHM UNDER THE GUIDE OF NON-CONTACT ARRAY Xu Jian, Sun Xianlin, Su Hao, Cheng Ming, Zhu Hongjun, An Chunsheng, Liu Fuyuan, Fan Xizheng, Yan Ji Anhui Provincial Hospital Cardiovascular Center 10.1136/heartjnl-2011-300867.542 Aims To explore the effectiveness and safety of catheter ablation for left posterior fascicular ventricular tachycardia under the guide of Ensite3000/array. Methods Patients with left posterior fascicular ventricular tachycardia from March 2009 to March 2011 in our centre were studied, including 1 perinatal cardiomyopathy patient and 2 dilated cardiomyopathy patients. Three dimensional geometry were constructed using Ensite3000/array and His bundle, left bundle branch, left posterior fascile and sinus rhythm breakout point were marked during sinus rhythm. The P potential and diastolic potential were mapped using array rapidly in the area just above sinus rhythm breakout point and after confi rmation by ablation catheter, a patchy ablation method were used with the appearance of left posterior fascicular block in ECG and no further ventricular tachycardia induction as a end point of ablation. Results The duration of VT QRS complex was 125.6±10.2 ms with RR interval 356.5±38.6 ms. The P potential and diastolic potential were all successfully mapped and 24 patients developed left posterior fascicular block in ECG and all patients having no further ventricular tachycardia induced. During follow-up, 1 patient had recurrent ventricular tachycardia and second ablation was performed resulting in deeper q wave in lead II, III and aVF and no ventricular arrhythmia induction. Conclusion Under the guide of Ensite3000/array, after marking of left posterior fascicle and mapping of P potential and diastolic potential as target, patchy ablation in the area between sinus breakout point and His bundle with appearance of left posterior bundle block and no VT induction as an end point might cure left posterior fascicular ventricular tachycardia rapidly, effectively and safely. Heart October 2011 Vol 97 Suppl 3 A185 Downloaded from http://heart.bmj.com/ on May 8, 2017 - Published by group.bmj.com Ablation of left posterior fascicular tachycardia during sinus rhythm under the guide of non-contact array Xu Jian, Sun Xianlin, Su Hao, Cheng Ming, Zhu Hongjun, An Chunsheng, Liu Fuyuan, Fan Xizheng and Yan Ji Heart 2011 97: A185 doi: 10.1136/heartjnl-2011-300867.542 Updated information and services can be found at: http://heart.bmj.com/content/97/Suppl_3/A185.2 These include: Email alerting service Topic Collections Receive free email alerts when new articles cite this article. Sign up in the box at the top right corner of the online article. Articles on similar topics can be found in the following collections Drugs: cardiovascular system (8842) Clinical diagnostic tests (4779) Tachyarrhythmias (208) Hypertension (3006) Dilated cardiomyopathy (292) Heart failure (565) Notes To request permissions go to: http://group.bmj.com/group/rights-licensing/permissions To order reprints go to: http://journals.bmj.com/cgi/reprintform To subscribe to BMJ go to: http://group.bmj.com/subscribe/