Effects of Sympathetic Stimulation on Various Repolarization Indices in the Congenital Long QT Syndrome
نویسندگان
چکیده
منابع مشابه
Effects of glucose-induced insulin secretion on ventricular repolarization in patients with congenital long QT syndrome.
To assess the role of insulin in ventricular repolarization in patients with congenital long QT syndrome (LQTS), an oral glucose tolerance (OGT) test was performed in 11 patients with LQTS and in 11 control cases without QT prolongation. Plasma glucose, potassium level and the immunoreactive insulin concentration (IRI) were measured, and the QT interval and T wave morphology on 12-lead ECG were...
متن کاملSympathetic nerve activity in the congenital long-QT syndrome.
BACKGROUND Patients with congenital long-QT syndrome (LQTS) are susceptible to life-threatening arrhythmias. The sympathetic nervous system may have an important triggering role for cardiovascular events in LQTS. We therefore examined measurements of sympathetic neural traffic in patients with LQTS and matched control subjects. METHODS AND RESULTS Twelve patients with congenital LQTS and 12 h...
متن کاملCongenital long QT syndrome
Congenital long QT syndrome (LQTS) is a hereditary cardiac disease characterized by a prolongation of the QT interval at basal ECG and by a high risk of life-threatening arrhythmias. Disease prevalence is estimated at close to 1 in 2,500 live births. The two cardinal manifestations of LQTS are syncopal episodes, that may lead to cardiac arrest and sudden cardiac death, and electrocardiographic ...
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Sympathetic stimulation produces a greater increase in both transmural and spatial dispersion of repolarization in LQT1 than LQT2 forms of congenital long QT syndrome.
OBJECTIVES The study compared the influence of sympathetic stimulation on transmural and spatial dispersion of repolarization between LQT1 and LQT2 forms of congenital long QT sYndrome (LQTS). BACKGROUND Cardiac events are more associated with sympathetic stimulation in LQT1 than in LQT2 or LQT3 syndrome. Experimental studies have suggested that the interval between Tpeak and Tend (Tp-e) in t...
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ژورنال
عنوان ژورنال: Annals of Noninvasive Electrocardiology
سال: 2002
ISSN: 1082-720X,1542-474X
DOI: 10.1111/j.1542-474x.2002.tb00182.x