Sami Viskin

..A sensible approach for the asymptomatic patient with J waves is proposed...

..The purpose of this study was to determine if pre-participation screening of athletes with a strategy including resting and exercise electrocardiography (ECG) reduces their risk for sudden death...

..We now validate our original observations in a cohort twice as large. We also describe that this abnormal QT-interval response persists as the heart rate acceleration returns to baseline...

..The purpose of this study was to define the electrocardiographic (ECG) predictors of torsade de pointes (TdP) during acquired bradyarrhythmias...

..Radiofrequency ablation has been suggested as first-line therapy in the management of accessory pathways. There are limited data on the results of ablation over years of experience...

..However, although beta-blockers prevent exercise-induced ventricular tachycardia (VT), most patients continue to have ventricular ectopy during exercise, and some studies report high mortality rates despite beta-blockade...

..Data on the incidence and significance of catheter-induced trauma to fast and slow pathways are scarce...

..The purpose of this study was to determine whether J-point elevation is a marker of arrhythmic risk...

..The predictive value of electrophysiologic studies depends on the aggressiveness of the programmed ventricular stimulation protocol...

..This study was undertaken to determine whether the short-lived sinus tachycardia that occurs during standing will expose changes in the QT interval that are of diagnostic value...

..This study sought to estimate the costs of a national electrocardiographic (ECG) screening of athletes in the United States and the number of lives that would be saved by that program...

..We therefore speculated that the combination of "J waves with horizontal ST segment" would correlate with a history of idiopathic ventricular fibrillation (VF) better than the mere presence of J waves...

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..Despite long-lasting catheter trauma to the RAFP, mapping of the tricuspid annulus showed persistent recording of an AP potential that enabled us to continue the procedure and successfully abolish the AP...

..CONCLUSIONS: Atrioventricular block is commonly "related to drugs" but is rarely "caused by drugs."..

..The purpose of this study was to determine if patients with idiopathic ventricular fibrillation (VF) have shorter QT intervals than comparable healthy controls...

..The unusual aspect of their RVOT-extrasystoles was their coupling interval, which appears to be intermediate between the ultra-short coupling interval of idiopathic VF and the long coupling interval seen in the truly benign RVOT-VT...

..The use of a "two-catheter approach" (one diagnostic and one ablation) was as effective and safe as a multi-catheter approach...

..Head-up tilt-table (HUT) testing is an easy way to achieve brisk sympathetic stimulation. Yet, little is known about the response of the QT interval to HUT...

..However, there are no data on the long-term reproducibility of this EP efficacy...

..Although we performed RFA of the slow pathway in patients with inducible AVNRT and no prior tachycardia documentation, the question whether this is mandatory remains unsettled...

..Although RF ablation of atrial flutter is the most frequently performed ablation procedure, data on the incidence and significance of an AV block occurring during the procedure are scarce...

..7 beats per minute (P< 0.001). These results were achieved within the first 37 +/- 11 minutes. CONCLUSIONS: Intravenous chlorpromazine is safe and effective when used as emergency treatment for uncontrolled symptomatic hypertension...

..Less is known about the site of onset of this arrhythmia. This study was conducted to determine if arrhythmias in the long QT syndrome (LQTS) have a predominant site of origin...

..A single radiofrequency pulse delivered at this site resulted in definite cure of the arrhythmia...

..However, data supporting this dogma originate from patients without previously documented ventricular tachyarrhythmias. We examined the significance of ventricular flutter in patients with and without spontaneous ventricular arrhythmias...

..We sought to take advantage of ivabradine's ability to decrease the maximal obtainable sinus rate in order to prevent inappropriate shocks due to sinus tachycardia in patients with an implanted cardioverter defibrillator (ICD)...

..It is important to define the percentage of physicians capable of distinguishing QT intervals that are long from those that are normal because LQTS can be lethal when left untreated...

..IS showed lymphocytosis, a high CD4 or CD8 count, eosinophilia and amiodarone in 3 of 4 patients. IS may be a useful tool for assessing amiodarone toxicity in patients with ischemic heart diseases and concomitant pulmonary side effects...

..In addition, we reviewed the published reviews and the Internet sites dealing with drug-induced arrhythmias. All the original articles quoted in these reviews and Web sites were examined critically...