Conclusion A total of 128 centers submitted data regarding AF ablation procedures in 932 patients (age 62.1±10.4 years; male 76.8%; paroxysmal AF 65.7%, CHADS2 score 1.0±1.0). Methods: An EnSite system was utilized for RFCA in 12 patients with right-sided atrial tachycardia (AT). Macroreentrant VT is a unique mechanism in these patients, although other mechanisms are involved in VT development. Transthoracic echocardiography showed a remarkable asynchronous septal motion. Conclusions Ablation techniques benefit from new technologies: interest and limits of cryo-ablation, new radio-frequency catheters, visualization of ablative lesions, contact control, and use of imaging techniques. External citations are calculated by subtracting the number of self-citations from the total number of citations received by the journal’s documents. During a follow-up period of 31±22 months, VT/VF episodes and death occurred in 45 (30%) and 16 (11%) patients, respectively. In such cases, a hybrid procedure involving surgical access with a subxiphoid pericardial window and a limited anterior or lateral thoracotomy might be a feasible and safe method of performing an epicardial catheter ablation in the electrophysiology laboratory.
Future studies are needed to understand the relationship between BS and the autonomic nervous system.Background: Significance of an ST-T abnormality in subjects with no apparent heart diseases is to be determined. From the fundamental understanding of the reentrant mechanism in scar-mediated VT to the advent and routine implementation of electroanatomic mapping, catheter ablation has emerged from a palliative last-resort therapy to a more preemptive strategy for patients at risk for arrhythmia recurrence. Amiodarone injection was administered for 24 h under continuous ECG monitoring according to a protocol used for ventricular tachyarrhythmias in Japan. Results: ST-T abnormalities were found in 6.49% in males, and more frequently in females: 8.45%. To investigate BS, it may be useful to consider VSA and NMS as concomitant abnormalities.

Conclusion We recorded monophasic action potentials from the right ventricular endocardium in patients with persistent atrial fibrillation who underwent internal atrial defibrillation during rapid ventricular pacing.

An electro-anatomical mapping system identified a low voltage area located close to the left ventricular anterior-apical wall. All patients successfully underwent primary PCI at the acute phase of AMI.

At GP-positive sites (n=57), significant shortening of the AFCL was detected in the adjacent PV (17% shortening, 165±38 to 137±27 ms, p<0.001) and distant PV (4.8% shortening, p<0.001), but not in the coronary sinus (0.8% shortening, p=0.27) or right atrium (1.8% shortening, p=0.06). In our 430 consecutive patients, AF was terminated in 97 (234/242) and 79% (149/188) of patients with paroxysmal and persistent AF, respectively, by CFAE ablation combined with (31%) or without (69%) pulmonary vein isolation, occasionally with nifekalant infusion. The entrainment mapping could be useful for identifying a critical reentry circuit path. Echocardiographic variables and the PA-TDI interval (time from ECG lead II P-wave onset to lateral a′ wave on tissue Doppler tracings, indicating the total atrial conduction time [TACT]) were evaluated in 33 paroxysmal AF patients before, 1 day, and 3, 6, and 12 months after ablation. However, late potentials cannot be detected in up to 30% of patients with VT in the setting of ischemic and non-ischemic cardiomyopathy. Twenty cycles were counted before and after each HFS.
There was no significant difference in the decrement rate in the protected areas between the two groups.