In the early 1960s, we used the few antiarrhythmic drugs available empirically, presuming that every premature ventricular contraction had to be suppressed. This presumption spurred ever greater effort, much of it going into antiarrhythmic drug development.' Throughout the 1980s, one new drug was being developed about every six months,2 and the number of antiarrhythmic prescriptions rose expone...

: The most common cause of acquired long QT syndrome in patients without physiological and structural cardiovascular disease is the use medications. Chronic high-dose methadone usage can prolongation interval that may provoke life-threatening arrhythmia Torsades de Pointes. In this study, we present a 41-year-old man with chronic who developed Pointes triggered by short-coupled premature ventri...

background: cirrhotic patients are at a greater risk of different kinds of arrhythmias. despite the well-known arrhythmogenic effects of halothane, developing countries continue to use halothane due to its low cost. this study was designed to investigate the pathophysiology of halothane untoward effects on heart rhythm moreover was aimed to explore the effect of halothane anesthesia on the thre...

IT IS NOW well appreciated that following a successful valvulotomy for valvular pulmonic stenosis, muscular hypertrophy in the right ventricular outflow tract may persist and be responsible for a significant resistance to right ventricular ejection.'-3 Similar muscular obstruction to the left ventricular outflow has also been noted in patients following surgical relief of discrete valvular or s...

We describe a case of radiofrequency ablation of ventricular premature contraction (VPC) originating from the left ventricular outflow tract after transcatheter aortic valve replacement. The VPC origin was the native aortic valve annulus between the left and right coronary cusps. Radiofrequency ablation was successfully performed by manipulating the ablation catheter from the gap between the si...

premature ventricular contraction (pvc) is one of the common cardiac arrhythmias. the occurrence of pvc is dangerous in people who have recently undergone heart. a pvc beat can easily be diagnosed by a doctor based on the shape of the electrocardiogram signal. but in automatic detection, extracting several important features from each beat is required. in this paper, a method for automatic dete...

The premature ventricular contraction (PVC) and the premature atrial contraction (PAC) are cardiac arrhythmias which are widely encountered in the cardiologic field. They can be detected using the electrocardiogram signal parameters. We use in this work a Neuro-fuzzy approach to identify these abnormal beats. To achieve this objective we have developed a Neuro-Fuzzy Classifier (NFCL), its perfo...