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Ha A.C.T.,University of Toronto | Breithardt G.,Universitatsklinikum Munster | Camm A.J.,St George's, University of London | Crijns H.J.,Maastricht University | And 9 more authors.
Circulation: Cardiovascular Quality and Outcomes | Year: 2014

Background-Improving health-related quality of life (HRQoL) is an important treatment goal in the management of patients with atrial fibrillation (AF). Uncertainty exists as to whether patients' HRQoL differ when treated with medical rhythm control or rate control. We compared HRQoL between patients treated with rhythm control or rate control in a large observational registry of patients with recent-onset AF. Methods and Results-In the Registry on Cardiac Rhythm Disorders Assessing the Control of Atrial Fibrillation (RECORDAF), 2439 patients with recent onset (<1 year) AF completed an AF-specific HRQoL questionnaire, the University of Toronto Atrial Fibrillation Severity Scale. HRQoL was assessed by the AF symptom severity score (0-35, with higher scores reflecting more severe AF-related symptoms) at baseline and 1 year. The minimal clinically important difference was defined as a change of ≥3 points. The primary analysis was based on a propensity score-adjusted longitudinal regression analysis which compared the change in AF symptom severity scores between the 2 groups. Over an average follow-up of 1 year, the AF symptom severity scores improved in both groups (rhythm control: -2.82 point [95% confidence interval, -3.22 to -2.41]; rate control: -2.11 point [95% confidence interval, -2.54 to -1.67]; P<0.01 for both groups). The magnitude of improvement was higher in the rhythm control group than the rate control group (unadjusted difference: -0.75 point; 95% confidence interval, -1.31 to -0.19; P=0.01; propensity score-adjusted difference: -0.71 point; 95% confidence interval, -1.31 to -0.11; P=0.02). Conclusions-In this observational cohort of recent-onset AF patients, treatment with medical rhythm- or rate control over 1 year was associated with an improvement in HRQoL. The magnitude of HRQoL improvement was minimally higher in patients treated with rhythm control than rate control. However, the overall degree of improvement was not large, and its clinical significance was uncertain. © 2014 American Heart Association, Inc.

PubMed | University of Kentucky, Lincoln, Center for Cardiac Arrhythmias of Genetic Origin Instituto Auxologico Italiano, The Lankenau Institute for Medical Research and 3 more.
Type: | Journal: The American journal of cardiology | Year: 2016

American and European society guidelines for atrial fibrillation management mostly agree on the utilization of rate and rhythm control strategies and the indications for oral anticoagulant (OAC) use. However, the level of adherence to guidelines in clinical practice may vary by region. In this study, data analysis from The Registry on Cardiac rhythm disorders assessing the control of Atrial Fibrillation (RECORD-AF) registry, an international registry in patients with newly diagnosed atrial fibrillation of <1year, shows that differences in practice exist between 3 regions, namely Western Europe, Eastern Europe, and North America. Data analyzed included major cardiovascular outcomes at 12months, choice of rhythm versus rate control strategy and the use of OAC according to CHADS2 score between regions, and the cost incurred according to management strategy. In conclusion, there is preference for rhythm control strategy in Europe compared to North America without a significant impact on major cardiovascular outcomes; there is significant discrepancy in the use of OAC in Eastern Europe compared to the 2 other regions; and rate control was found to be more costly in all regions.

PubMed | Menarini Research & Business Service GmbH, University of Barcelona, Corporacio Sanitaria Parc Tauli de Sabadell, Center for Cardiac Arrhythmias of Genetic Origin Instituto Auxologico Italiano and 13 more.
Type: Clinical Trial, Phase II | Journal: Heart rhythm | Year: 2015

Currently available antiarrhythmic agents for the treatment of atrial fibrillation (AF) have important limitations, leaving an unmet need for safe and effective therapy. Ranolazine is an approved antianginal agent with a favorable safety profile and electrophysiologic properties suggesting a potential role in the treatment of AF.The purpose of this study was to assess the safety and efficacy of ranolazine in the prevention of AF recurrence after successful electrical cardioversion and to ascertain the most appropriate dose of this agent.This prospective, multicenter, randomized, double-blind, placebo-control parallel group phase II dose-ranging trial randomized patients with persistent AF (7 days to 6 months) 2 hours after successful electrical cardioversion to placebo, or ranolazine 375 mg, 500 mg, or 750 mg bid. Patients were monitored daily by transtelephonic ECG. The primary end-point was the time to first AF recurrence.Of 241 patients randomized, 238 took at least 1 drug dose. Ranolazine proved to be safe and tolerable. No dose of the drug significantly prolonged time to AF recurrence. AF recurred in 56.4%, 56.9%, 41.7%, and 39.7% of patients in the placebo, ranolazine 375 mg, ranolazine 500 mg, and ranolazine 750 mg groups, respectively. The reduction in overall AF recurrence in the combined 500-mg and 750-mg groups was of borderline significance compared to the placebo group (P = .053) and significant compared to 375-mg group (P = .035).No dose of ranolazine significantly prolonged time to AF recurrence. However, the 500-mg and 750 mg-groups combined reduced AF recurrences, suggesting a possible role for this agent in the treatment of AF.

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