Provocative testing and drug response in a patient with the long QT syndrome.
نویسندگان
چکیده
A girl of 14 with the long QT syndrome (LQTS) and torsades de pointes is reported. Isoprenaline or adrenaline infusions induced torsades de pointes and inversion of the TU wave. Changes in the TU wave during isoprenaline infusion were used to select effective drugs to treat this patient. A beta blocker and calcium channel blocker were selected and the patient had no episodes of syncope for two years. This electrocardiographically guided method may be useful for selecting effective drugs in patients with the LQTS.
منابع مشابه
گزارش یک مورد سندرم ژرول- لانژنلسون
Long QT syndrome, which is defined by corrected QT interval longer than 0.45 seconds in men and o. 47 sec in women , could be divided into idiopathic (congenital ) and acquired forms. The idiopathic form is a familial disorder that can be associated with sensorineural deafness (Jervell and Lange- Neelson syndrome), which is transmitted with an autosomal recessive pattern. Although this syndrome...
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Background: Long QT syndrome (LQTS) is a disorder in which electrical cardiac ventricular repolarization is impaired. It results in an increased risk of an irregular heartbeat which can result in palpitations, fainting, drowning, or sudden death. Long QT Syndrome may present as tonic-clonic seizure or a seizure-like disorder. By taking a superficial electrocardiogram (ECG) and proper diagnosis,...
متن کاملKCNE1 and KCNE2 variants in Patients with Long QT Syndrome
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متن کاملAdvances in Arrhythmia and Electrophysiology How to Perform and Interpret Provocative Testing for the Diagnosis of Brugada Syndrome, Long-QT Syndrome, and Catecholaminergic Polymorphic Ventricular Tachycardia
Sudden cardiac death (SCD) is predominantly related to coronary artery disease and its sequelae, cardiomyopathy, and congenital or valvular heart disease. No structural abnormalities are detectable in 5–8% of SCDs.1 Identified ion channelopathies such as Brugada syndrome, long-QT syndrome (LQTS), and catecholaminergic polymorphic ventricular tachycardia (CPVT) contribute to this incidence. The ...
متن کاملهای اسید گلوتامیک، تریپتوفان، آلانین tRNA بررسی مولکولی در Long QT وآسپارژین درژنوم میتوکندری بیماران مبتلا بهسندرم مقایسه با گروه کنترل
Background and purpose: Long QT syndrome is a heart arrhythmia identified by prolongation of the QT interval which is a cause of sudden cardiac death in young individuals. In most cases, abnormalities in heart repolarization are reasons of prolongation of action potential and arrhythmia. The activity of ion channels is sensitive to ATP level, therefore, mitochondrial disorders are considered...
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ورودعنوان ژورنال:
- British heart journal
دوره 74 1 شماره
صفحات -
تاریخ انتشار 1995