Early Repolarization in Long QT Syndrome
نویسندگان
چکیده
منابع مشابه
KCNE1 and KCNE2 variants in Patients with Long QT Syndrome
Introduction: Long QT syndrome (LQTS) is a type of ventricular arrhythmia characterized by prolonged QT intervals on electrocardiogram or delay in ventricular repolarization and it can lead to syncope, seizure and sudden cardiac death. Here, KCNE1 and KCNE2 variants are studied among Iranian affected families with this syndrome. Materials and Methods: Fifty patients referring to Rajaei Cardiov...
متن کاملChanges in ventricular repolarization duration during typical daily emotion in patients with Long QT syndrome.
OBJECTIVE Intense emotions are known triggers of sudden cardiac death. However, the effect of typical daily emotion on repolarization has not been examined. We examined whether QT interval changes as a function of typical daily emotion in patients at risk for cardiac events in the context of emotion. METHODS We studied 161 patients (n = 114 females; mean age, 35 years) with the congenital for...
متن کاملAbnormal repolarization dynamics revealed in exercise test in long QT syndrome mutation carriers with normal resting QT interval.
AIMS The identification of affected family members with long QT syndrome (LQTS) is often difficult due to their normal-or only marginally lengthened-QT interval duration. We examined whether physical exercise test could increase the ability to detect the mutation carrier status in phenotypically normal LQTS family members. METHODS AND RESULTS Sixty-six subjects were included: 15 were carriers...
متن کاملAmbulatory Electrocardiographic Evidence of Transmural Dispersion of Repolarization in Patients With Long-QT Syndrome
Background—Transmural dispersion of repolarization (TDR) may be related to the genesis of torsade de pointes (TdP) in patients with the long-QT (LQT) syndrome. Experimentally, LQT2 models show increased TDR compared with LQT1, and -adrenergic stimulation increases TDR in both models. Clinically, LQT1 patients experience symptoms at elevated heart rates, but LQT2 patients do so at lower rates. T...
متن کاملModification of Ventricular Repolarization in Silent Long Qt Syndrome Mutation Carriers
3 List of original publications 8 Abbreviations 9
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ژورنال
عنوان ژورنال: JACC: Clinical Electrophysiology
سال: 2018
ISSN: 2405-500X
DOI: 10.1016/j.jacep.2018.07.003