• Expert Opin Pharmacother · Apr 2012

    Comment

    PALLAS: limiting indications for dronedarone treatment of atrial fibrillation?

    • Sheila A Doggrell and Jules C Hancox.
    • Queensland University of Technology, School of Biomedical Sciences, Faculty of Health, Brisbane, QLD 4001, Australia. sheila.doggrell@qut.edu.au
    • Expert Opin Pharmacother. 2012 Apr 1; 13 (6): 867-71.

    AbstractAtrial fibrillation increases the risk of stroke. Dronedarone has been shown to reduce the composite of hospitalizations due to cardiovascular events or death, in subjects with intermittent atrial fibrillation or flutter. Recently, dronedarone has been tested in subjects with permanent atrial fibrillation in the PALLAS (permanent atrial fibrillation outcome study using dronedarone on top of standard therapy) trial, and this clinical trial is evaluated in this paper. PALLAS was stopped early as there was an increased incidence of cardiovascular events in the dronedarone group. Dronedarone also increased the rate of hospitalizations in PALLAS. As a result of PALLAS, dronedarone has been contraindicated in permanent atrial fibrillation. The outcomes of PALLAS highlight a discontinuity between dronedarone actions in permanent and intermittent atrial fibrillation. The mechanism(s) underlying the detrimental effects of dronedarone in permanent atrial fibrillation are unknown at present and need to be investigated.

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