Aggravation and provocation of ventricular arrhythmias by antiarrhythmic drugs.

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Aggravation and provocation of ventricular arrhythmias by antiarrhythmic drugs.

Antiarrhythmic drugs may aggravate or even induce ventricular arrhythmias. This type of adverse reaction is becoming more prevalent as the use of antiarrhythmic agents becomes more widespread. In a retrospective analysis of antiarrhythmic drug action, a worsening of arrhythmia was observed in 80 of 722 (11.1%) antiarrhythmic drug tests in 53 of 155 patients being treated for ventricular tachyar...

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In the Cardiac Arrhythmia Pilot Study (CAPS), patients early (6-60 days) after acute myocardial infarction (MI) with ventricular premature complexes (VPCs) of over 10 per hour were randomized to receive, unaware, therapy with one of four antiarrhythmic drugs (n =402) or placebo (n = 100). Treatment success was defined as 70% or more decrease in VPC rate and 90% or more decrease in VPC runs. If ...

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Degradation of cellular material by lysosomes is known as autophagy, and its main function is to maintain cellular homeostasis for growth, proliferation and survival of the cell. In recent years, research has focused on the characterization of autophagy pathways. Targeting of autophagy mediators has been described predominantly in cancer treatment, but also in neurological and cardiovascular di...

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Elevation of ventricular defibrillation threshold in dogs by antiarrhythmic drugs.

Effects of antiarrhythmic drugs upon the threshold delivered energy (TDE) and threshold peak current (TPC) for electrical ventricular defibrillation by damped sinusoidal shocks were investigated in 25 pentobarbital-anesthetized dogs. TDE and TPC were increased by the three antiarrhytmic drugs tested. Bolus injections produced a transient rise and continuous infusions produced a steady rise in d...

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Antiarrhythmic drug therapy for sporadic ventricular ectopic arrhythmias.

or quinidine. Two dose schedules were employed; procaine amide, 3.0 and 6.0 g daily and quinidine, 1.2 and 1.8 g daily. Though adequate and even high drug blood levels were reached, an effective antiarrhythmic response was observed in only eight patients receiving procaine amide and in seven of those taking quinidine. These modest successful results were associated with a high incidence of trou...

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ژورنال

عنوان ژورنال: Circulation

سال: 1982

ISSN: 0009-7322,1524-4539

DOI: 10.1161/01.cir.65.5.886