منابع مشابه
Ventricular Fibrillation
The cellular events during the initiation and maintenance of ventricular fibrillation (VF) are poorly understood. We developed a nonischemic, isolated, perfused rabbit Langendorff preparation in which sustained VF could be induced by alternating current (AC) and which allowed changes in perfusate composition. We also used Na+-K+ pump inhibition (10 ,uM ouabain or K'-free perfusate) to induce VF...
متن کاملIdiopathic Ventricular Fibrillation
Sudden cardiac arrest (SCA) and sudden cardiac death (SCD) are disastrous outcomes of various predominant cardiac diseases. The leading cause of SCA and SCD is coronary artery disease. However, SCA/SCD in young patients is mainly caused by congenital disorders of primary arrhythmic or structural origin. SCD is defined as death from an unexpected circulatory arrest, usually because of a cardiac ...
متن کاملHuman Ventricular Fibrillation
Amajor controversy in cardiac electrophysiology is whether ventricular fibrillation (VF) is maintained by wandering wavelets or mother rotors. On the basis of a computer model of atrial fibrillation by Moe1 developed in 1962, fibrillation was hypothesized to be maintained by multiple small, wandering wavelets, in which the activation pattern is constantly changing. According to the wandering wa...
متن کاملModification of Ventricular Fibrillation
Abrupt occlusion of the left anterior descending coronary artery was performed on 43x unanesthetized farm pigs in order to evaluate the relative effects on the latency to ventricular fibrillation (\VFL) of 1 ) adaptation of the animals to the laboratory, and 2) beta-receptor blockade by propranolol. Compared to control values, VFL, was greatly lengthened (i.e., VF delayed or prevented) by adapt...
متن کاملVentricular Fibrillation Occurring
A patient is described having syncopal attacks on being awakened from sleep by auditory stimuli. The electrocardiogram registered during these episodes showed Q-Tsegment changes followed by ectopic ventricular activity and spontaneously ending attacks of ventricular fibrillation. Aside from the attacks, her ECG only showed abnormalities of the S-T segment with marked U waves. Hemodynamic and el...
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ژورنال
عنوان ژورنال: Circulation
سال: 1971
ISSN: 0009-7322,1524-4539
DOI: 10.1161/01.cir.43.4.520