Objective(s): Ventricular arrhythmias including ventricular tachycardia (VT) and ventricular fibrillation (VF) are the most important causes of mortality rate. Gallic acid (GA) has beneficial effects on cardiovascular diseases. The aim of this study was to evaluate the effects of GA on electrophysiological parameters such as QRS complex, heart rate (HR), PR interval pa...

OBJECTIVES To assess the impact of β1 -adrenoceptor blockers (β1 -blocker) and isoprenaline on the incidence of idiopathic repetitive ventricular arrhythmia that apparently decreases with preprocedural anxiety. METHODS From January 2010 to July 2012, six patients were identified who had idiopathic ventricular arrhythmias that apparently decreased (by greater than 90%) with preprocedural anxie...

PURPOSE OF REVIEW To summarize the available evidence concerning the occurrence and treatment of ventricular arrhythmias in patients supported with long-term ventricular assist devices (VADs). RECENT FINDINGS Approximately one-third of left ventricular assist device-supported patients experience significant ventricular arrhythmias, with higher rates in certain patient subsets. Ventricular arr...

Abstract Introduction: Resent studies have been shown beneficial effects of hyperoxia pretreatment against ischemia-reperfusion injury in different organs. The aim of the present study was to investigate early and late effects of normobaric hyperoxia (≥95% O2) pretreatment on ischemia-reperfusion injuries in isolated rat hearts. Methods: Following 60 and 180 minutes of hyperoxia, rat hearts w...

BACKGROUND Congestive heart failure (CHF) is a common cardiovascular disease that is often accompanied by ventricular arrhythmias. The decrease of the slow component of the delayed rectifier potassium current (IKs) in CHF leads to action potential (AP) prolongation, and the IKs is an important contributor to the development of ventricular arrhythmias. However, the molecular mechanisms underlyin...

THE EFFECT OF METHOXYFLURANE on the sensitivity of the heart to epinephrineinduced ventricular arrhythmias has not been clearly defined. On the one hand, animal experiments have been reported which found that methoxyflurane increases ventricular arrhythmias associated with epinephrine administration. 1,~ On the other hand, other studies have found that methoxyflurane protects against arrhythmia...

BACKGROUND Several studies performed before the advent of thrombolysis have shown that the presence of ventricular arrhythmias is an independent risk factor for subsequent mortality in patients recovering from acute myocardial infarction. Since fibrinolysis affects the natural history of infarction and may alter the clinical relevance of different risk factors, the aim of the present study was ...

STUDY OBJECTIVES The aim of this study was to examine the influence of sleep-related breathing disorders (SBDs) on the occurrence of ventricular arrhythmias in patients with reduced left ventricular ejection fraction (LVEF), and life-threatening ventricular tachyarrhythmias treated with an implantable cardioverter-defibrillator. PATIENTS Thirty-eight patients with LVEF of 36 +/- 13% (mean +/-...

cardiac involvement infrequently occurs in hypopituitarism, and lethal cardiac arrhythmias are rarely reported. we present a middle age female who died as a consequence of refractory ventricular arrhythmia whose medical history and previous laboratory investigation were consistent with hypopituitarism. we conclude that hypopituitarism may lead to electrocardiographic changes and malignant ventr...

objective(s) this study aimed to examine whether acetyl-l-carnitine (alc) was able to reduce cardiac arrhythmias and infarct size in the ischemic-reperfused isolated rat heart. materials and methods the isolated hearts were mounted on a langendorff apparatus then perfused by a modified krebs-henseleit solution during 30 min regional ischemia and 120 min reperfusion (control) or by enriched kreb...