Abstract Funding Acknowledgements Type of funding sources: None. Background In patients who are refractory to box isolation (BoxI) and have atrial fibrillation (AF) substrate in left inferior wall (LAIW), LAIW is effective, but the procedure highly difficult because connection between coronary sinus (CS) dense. this study, we report four cases persistent AF which simultaneous CS was so effectiv...

____________ _ A 27 -year-old male patient presented for elective arrythmia surgery. Due to the nature of the surgical procedure, i.e. normothermic bypass, light anaesthetic, dislocation of the heart, etc., the physical size of this patient was of concern. The patient was 183 em tall and weighed 141 kg. The calculated body surface area was 2.68 M2 and the calculated flow was 6.7 LPM. Because of...

Abstract Background Slow pathway (SP) radiofrequency (RF) ablation of AVNRT has a success rate more than 98%, but up to 2% risk unpredictable and frustrating AV node block despite the energy being delivered posterior aspect Koch's Triangle (KT) which is far from recorded His signal. A possible explanation an atypical location node. KT pace-mapping (KTPM) been demonstrated be useful recognize wh...

BACKGROUND The purpose of this study was to report the results and complications of radiofrequency catheter ablation of accessory atrioventricular (AV) connections by using an abbreviated approach aimed at minimizing the duration of the procedure. METHODS AND RESULTS Two hundred fifty consecutive patients with the Wolff-Parkinson-White syndrome or paroxysmal supraventricular tachycardia invol...

BACKGROUND Ablation of the slow pathway has been performed to eliminate atrioventricular (AV) nodal reentrant tachycardia (AVNRT) either by a surgical approach or by using radiofrequency catheter technique guided by retrograde slow pathway activation mapping. From previous experience of midseptal and posteroseptal mapping, we were aware of the existence of peculiar slow potentials in most human...

A 39-year-old athletic female with symptomatic Wolff-Parkinson-White syndrome underwent an electro-physiological study and subsequent ablation of orthodromic reentrant tachycardias using left lateral, posterolateral, and posteroseptal accessory pathways. Ablation was performed with 7F medium-and large-curl Safire catheters using the retrograde aortic approach. Eighteen radiofrequency lesions we...

This patient has an arrhythmia with orthodromic circus movement tachycardia and dual AV-nodal pathways. In addition, the ECG shows a Brugada pattern. The resting ECG (Fig. 1a) shows sinus rhythm and a type 2 Brugada pattern. The 12-lead ECG during arrhythmia (Fig. 1b) shows a narrow QRS rhythm, 88 bpm (cycle length: 680 ms) with a 1:1 AV ratio. The P waves are narrow and inverted in leads II, I...

OBJECTIVES The purpose of this study was to categorize the reasons for a prolonged or failed procedure in a series of patients undergoing catheter ablation of an accessory pathway. BACKGROUND Radiofrequency ablation of accessory pathways at times requires a lengthy procedure or a second ablation session, or both, and not prior studies have systematically investigated the reasons for this. M...