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• W2081276498 abstract "<h2>Abstract</h2> The results of previous clinical trials, in a variety of clinical settings, showed that class I agents may consistently increase mortality in sharp contrast to the effects of β blockers. Attention has therefore shifted to class III compounds for potential beneficial effects on long-term mortality among patients with underlying cardiac disease. Clinical trials with <i>d</i>-sotalol, the dextro isomer (devoid of β blockade) of sotalol, showed increased mortality in patients with low ejection fraction after myocardial infarction and in those with heart failure; whereas in the case of dofetilide, the impact on mortality was neutral. Because of the complex effects of its actions as an α-adrenergic blocker and a class III agent, the impact on mortality of amiodarone in patients with heart failure is of particular interest. A meta-analysis of 13 clinical trials revealed significant reductions in all-cause and cardiac mortality among patients with heart failure or previous myocardial infarction. Among these were 5 controlled clinical trials that investigated the effects of amiodarone on mortality among patients with heart failure. None of these trials was large relative to the β-blocker trials in the postinfarction patients. However, the larger 2 of the 5 amiodarone trials produced discordant effects on mortality, neutral in one and significantly positive in the other. Some of the differences may be accounted for by the differences in eligibility criteria and baseline characteristics. Future trials that may be undertaken to resolve the discrepancies may need to allow for the newer findings on the effects of concomitant β blockers, implantable devices, and possibly, spironolactone. All these modalities of treatment have been shown in controlled clinical trials to augment survival in patients with impaired ventricular function or manifest heart failure. Additional trials, some of which are currently in progress, compare amiodarone with implantable devices and other therapeutic interventions, and should help to clarify the optimal management strategy for patients with underlying heart failure." @default.
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• W2081276498 title "Class III antiarrhythmic agents in cardiac failure: lessons from clinical trials with a focus on the grupo de estudio de la sobrevida en la insuficiencia cardiaca en Argentina (GESICA)" @default.
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• W2081276498 doi "https://doi.org/10.1016/s0002-9149(99)00711-0" @default.
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