Outcomes of Pulmonary Vein Isolation in Athletes.

Objectives: The aims of this study were to assess outcomes of pulmonary vein isolation (PVI) performed on athletes at a tertiary care center and to characterize its efficacy and physiological effects.

Background: The incidence of atrial fibrillation (AF) is increased in highly trained athletes and poses unique management challenges.

Methods: Athletes were identified through a database of patients undergoing PVI from January 2000 through October 2015.

Effect of Left Ventricular Conduction Delay on All-Cause and Cardiovascular Mortality (from the PRECISION Trial).

The prognosis associated with prolonged intraventricular conduction on electrocardiogram (ECG) remains uncertain. We aimed to compare clinical outcomes of narrow versus prolonged intraventricular conduction on ECG stratified by QRS morphology and cardiovascular disease (CVD) status. A post-hoc analysis was performed of the randomized-control PRECISION trial.

The function of the autonomic nervous system during spaceflight.

Introduction: Despite decades of study, a clear understanding of autonomic nervous system activity in space remains elusive. Differential interpretation of fundamental data has driven divergent theories of sympathetic activation and vasorelaxation.

Methods: This paper will review the available in-flight autonomic and hemodynamic data in an effort to resolve these discrepancies.