نتایج جستجو برای: ventricular fibrillation
تعداد نتایج: 191527 فیلتر نتایج به سال:
introduction: electrophysiological studies have demonstrated a relationship between aging and atrioventricular (av) nodal conduction and refractoriness. the aim of the present study was to determine the effects of nodal aging on dynamic av nodal field potential recording during atrial fibrillation (af) in rabbit. methods: two groups of male new zealand rabbits (neonatal 2-week-olds and adult 12...
Malignant early repolarization as cause of sudden death has taken on great importance in recent years. It been described an entity capable producing ventricular arrhythmic events, causing from episodes syncope to cardiac death. Ventricular fibrillation is the typical arrhythmia these patients, with no clear relationship date idiopathic monomorphic tachycardia. Electrocardiographic markers relat...
acute myocardial infarction can culminate in sudden cardiac death due to cardiogenic shock and ventricular fibrillation, and also rarely due to cardiac rupture. we present a case of post-infarction myocardial rupture after thrombolytic therapy diagnosed with transthoracic echocardiography and treated with direct closure and coronary artery bypass grafting.
Intravenous magnesium has been used to prevent and treat many different types of cardiac arrhythmia. It has diverse electrophysiological actions on the conduction system of the heart; including prolonging sinus node recovery time, and reducing automaticity, atrioventricular nodal conduction, antegrade and retrograde conduction over an accessory pathway, and His-ventricular conduction. Intraveno...
Introduction: The present study is aimed to evaluate electrophysiological remodeling of atrioventricular (AV) node and ventricular conduction during experimental atrial fibrillation (AF) model in isolated heart of cirrhotic rats. Methods: Cirrhosis-induced electrophysiological remodeling was evaluated in 24 isolated retrogradely perfused rat hearts in 2 groups (control and cirrhotic). Cirrho...
Background and Objectives: Atrial fibrillation is one of the most common disorientations after coronary artery bypass graft surgery and can affect the chance of survival in the first year after surgery. The present study aimed to determine the incidence of atrial fibrillation after coronary artery bypass graft surgery and its risk factors. Methods: This cross-sectional study was performed on...
Important electrophysiological alterations that may predispose hearts to arrhythmias have been described for hypertrophied myocytes, and hypertrophy coupled with ischemia has been associated with an increased incidence of sudden death; however, an influence of hypertrophy on reperfusion arrhythmias has not been previously described. We hypothesized that reperfusion-associated arrhythmias would ...
OBJECTIVE To determine factors related to mortality within hospital after successful resuscitation from ventricular fibrillation outside hospital by a mobile coronary care unit manned by a physician. DESIGN Retrospective review of records of patients resuscitated and admitted to hospital between 1 January 1966 and 31 December 1987. SETTING Mobile coronary care unit, coronary care unit, and ...
Background: Dextrocardia is a congenital anomaly, which may have coexistent coronary artery disease (CAD), arrhythmias and conventional indications for device therapy. However, the implantation of transvenous leads can be technically challenging and the approach needs to be tailored to the patient's individual anatomy. Case presentation: A 54-year-old male with dextrocardia situs inversus and i...
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