نتایج جستجو برای: qt prolongation
تعداد نتایج: 22871 فیلتر نتایج به سال:
BACKGROUND Drug-induced QT interval prolongation, a risk factor for life-threatening ventricular arrhythmias, is a potential side effect of many marketed and withdrawn medications. The contribution of common genetic variants previously associated with baseline QT interval to drug-induced QT prolongation and arrhythmias is not known. METHODS We tested the hypothesis that a weighted combination...
Introduction Bradycardia is a known risk factor for QT prolongation and polymorphic ventricular tachycardia (polymorphic VT). With the widespread use of pacemakers, it is important to pay attention to different pacing modes while programming pacemakers to avoid bradycardia. We present a case of bradycardia-induced polymorphic VT that occurred after a VDD pacemaker was replaced with a VVIR pacem...
Macrolide antibiotics are known to have a different proarrhythmic potential in the presence of comparable QT prolongation in the surface ECG. Because the extent of QT prolongation has been used as a surrogate marker for cardiotoxicity, we aimed to study the different electrophysiological effects of the macrolide antibiotics erythromycin, clarithromycin, and azithromycin in a previously develope...
bACKgRoUND: Fragmented QRS (fQRS), QT prolongation and wide QRS have been associated with increased risk for cardiac arrhythmias. objECTIVES: To describe the prevalence and correlates among Nigerians with heart failure. METhoDS: A total of 129 subjects were consecutively recruited for the present study. QT interval, QRS duration and fQRS were determined. SPSS version 16 was used for analysis. R...
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