Association Between rs2200733 Polymorphism on Chromosome 4q25 and Atrial Fibrillation in a Greek Population.

Introduction: Atrial fibrillation (AF) is a common arrhythmia with evidence of genetic susceptibility. The rs2200733 single-nucleotide polymorphism (SNP) in a non-coding region on chromosome 4q25 has been associated with AF. The purpose of this case-control study was to examine the possible association of the rs2200733 polymorphism with AF in the Greek population.

Ranolazine enhances the efficacy of amiodarone for conversion of recent-onset atrial fibrillation.

Aims: Amiodarone is used commonly for pharmacological cardioversion of atrial fibrillation (AF), but it is limited by moderate efficacy and delayed action. Ranolazine and amiodarone are markedly synergistic in suppressing experimental AF in vitro, yet the clinical efficacy of ranolazine combined with amiodarone for AF conversion has only undergone minimal investigation. This prospective, single-blinded, randomized study compared the safety and efficacy of ranolazine added to amiodarone vs.