Journal of cardiovascular electrophysiology
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J. Cardiovasc. Electrophysiol. · Jun 2017
Recurrences in the Blanking Period and 12-Month Success Rate by Continuous Cardiac Monitoring After Cryoablation of Paroxysmal and Non-Paroxysmal Atrial Fibrillation.
Recurrences within the blanking period (early recurrences) are common after atrial fibrillation (AF) ablation by pulmonary vein isolation (PVI), but their clinical significance is still controversial. We aimed at evaluating the significance of within-blanking recurrences at 12-month follow-up after cryoballoon (CB) PVI, and to assess the real procedural success rate by continuous monitoring of cardiac rhythm. ⋯ CB-PVI for paroxysmal AF shows a 12-month success rate of 76.5% after one single procedure, as assessed by continuous cardiac rhythm monitoring. Within-blanking recurrences predict the ablation failure in more than 80% of patients.
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J. Cardiovasc. Electrophysiol. · Jun 2017
The Utility of Exercise Testing in Risk Stratification of Asymptomatic Patients With Type 1 Brugada Pattern.
Risk stratification of asymptomatic patients with a Brugada type 1 ECG pattern remains an unresolved clinical conundrum. In contrast to provocative pharmacological testing in Brugada syndrome, there is limited data on the role of exercise stress testing as a risk stratification modality. The objective of this study was to evaluate the utility of exercise testing in asymptomatic patients with type 1 Brugada pattern to prognosticate major arrhythmic events (MAE) during follow-up. ⋯ Exercise testing in asymptomatic patients with type 1 Brugada pattern aids in identification of high-risk patients and provides a unique window of opportunity for early intervention.
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J. Cardiovasc. Electrophysiol. · May 2017
Multicenter Study Observational StudyCatheter Ablation of Ventricular Tachycardia in Patients With MitraClip Device: Preliminary Findings.
Patients with mitral regurgitation are increasingly treated by percutaneous implantation of a MitraClip device (Abbott Park, IL, USA). We investigate the feasibility and safety of the transmitral catheter route for catheter ablation of ventricular tachycardia (VT) in these patients. ⋯ This is the first report demonstrating the feasibility and safety of VT ablation in patients with a MitraClip device using the anterograde transmitral catheter route.
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J. Cardiovasc. Electrophysiol. · Apr 2017
Multicenter StudyEarly Canadian Multicenter Experience With WATCHMAN for Percutaneous Left Atrial Appendage Closure.
There are limited data with WATCHMAN (Boston Scientific Corporation, Natick, MA, USA) for left atrial appendage (LAA) closure in patients with nonvalvular atrial fibrillation (AF) and contraindications to anticoagulation. The purpose of this study was to evaluate the safety and efficacy of WATCHMAN in our early Canadian experience. ⋯ In our early Canadian experience, WATCHMAN for LAA closure in patients contraindicated to anticoagulation appeared safe and effective.
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J. Cardiovasc. Electrophysiol. · Apr 2017
Case ReportsAutonomic Modulation for the Treatment of Ventricular Arrhythmias: Therapeutic Use of Percutaneous Stellate Ganglion Blocks.
Ventricular tachycardia (VT), ventricular fibrillation (VF), and electrical storm are commonly encountered emergency conditions in cardiac and surgical intensive care units. In most cases, recurrent ventricular arrhythmias or electrical storm are associated with a heightened sympathetic tone. ⋯ We present 2 cases of minimally invasive stellate ganglion blocks for the treatment of electrical storm in patients with advanced heart failure on mechanical life support. These cases are part of a collaborative initiative at our institution to use percutaneous stellate ganglion block as an adjunctive intervention to achieve control of life-threatening ventricular arrhythmias.