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Distribution and Prognostic Significance of Fragmented QRS in Patients With Brugada Syndrome [Original Article]
Conclusions— The distribution of fQRS is associated with prognosis in Brugada syndrome, further supporting the association of fQRS and arrhythmia substrate. (Source: Circulation: Arrhythmia and Electrophysiology)
Source: Circulation: Arrhythmia and Electrophysiology - March 16, 2017 Category: Cardiology Authors: Morita, H., Watanabe, A., Morimoto, Y., Kawada, S., Tachibana, M., Nakagawa, K., Nishii, N., Ito, H. Tags: Arrhythmias, Sudden Cardiac Death, Ventricular Fibrillation, Electrocardiology (ECG) Original Article Source Type: research

Electrophysiology of Hypokalemia and Hyperkalemia [Basic Science for the Clinical Electrophysiologist]
(Source: Circulation: Arrhythmia and Electrophysiology)
Source: Circulation: Arrhythmia and Electrophysiology - March 16, 2017 Category: Cardiology Authors: Weiss, J. N., Qu, Z., Shivkumar, K. Tags: Arrhythmias, Electrophysiology, Basic Science Research, Ion Channels/Membrane Transport, Ischemia Basic Science for the Clinical Electrophysiologist Source Type: research

Temporal Trends and Temperature-Related Incidence of Electrical Storm: The TEMPEST Study (Temperature-Related Incidence of Electrical Storm) [Original Article]
Conclusions— ES incidence is not homogenous over time but seems to have a clustered pattern, with a higher incidence during daytime hours and working days. ES is associated with an increase in monthly temperature variation. Clinical Trial Registration— https://www.crd.york.ac.uk. Unique identifier: CRD42013003744. (Source: Circulation: Arrhythmia and Electrophysiology)
Source: Circulation: Arrhythmia and Electrophysiology - March 16, 2017 Category: Cardiology Authors: Guerra, F., Bonelli, P., Flori, M., Cipolletta, L., Carbucicchio, C., Izquierdo, M., Kozluk, E., Shivkumar, K., Vaseghi, M., Patani, F., Cupido, C., Pala, S., Ruiz-Granell, R., Ferrero, A., Tondo, C., Capucci, A. Tags: Arrhythmias, Catheter Ablation and Implantable Cardioverter-Defibrillator, Ventricular Fibrillation Original Article Source Type: research

Prognostic Implications of Nonsustained Ventricular Tachycardia in High-Risk Patients With Hypertrophic Cardiomyopathy [Original Article]
Conclusions— On extended monitoring, NSVT was independently associated with ICD-treated ventricular arrhythmias, supporting the importance of NSVT in hypertrophic cardiomyopathy risk stratification. Faster rate (>200 beats per minutes), longer (>7 beats), and repetitive runs of NSVT were more highly predictive of ICD-treated VT/VF. (Source: Circulation: Arrhythmia and Electrophysiology)
Source: Circulation: Arrhythmia and Electrophysiology - March 16, 2017 Category: Cardiology Authors: Wang, W., Lian, Z., Rowin, E. J., Maron, B. J., Maron, M. S., Link, M. S. Tags: Arrhythmias, Sudden Cardiac Death, Clinical Studies, Cardiomyopathy, Hypertrophy Original Article Source Type: research

Effects of Late Sodium Current Blockade on Ventricular Refibrillation in a Rabbit Model [Original Article]
Conclusions— Late Na+ current inhibition during long-duration VF reduces the susceptibility to subsequent refibrillation, partially by mitigating dysregulation of intracellular Ca2+. These results suggest the potential therapeutic use of ranolazine and GS-967 and call for further testing in cardiac arrest models. (Source: Circulation: Arrhythmia and Electrophysiology)
Source: Circulation: Arrhythmia and Electrophysiology - March 16, 2017 Category: Cardiology Authors: Azam, M. A., Zamiri, N., Masse, S., Kusha, M., Lai, P. F. H., Nair, G. K., Tan, N. S., Labos, C., Nanthakumar, K. Tags: Basic Science Research Original Article Source Type: research