Transmural Differences in Myocardial Contraction in Long-QT Syndrome
نویسندگان
چکیده
منابع مشابه
Transmural differences in myocardial contraction in long-QT syndrome: mechanical consequences of ion channel dysfunction.
BACKGROUND Long-QT syndrome (LQTS) is characterized by prolonged myocardial action potential duration. The longest action potential duration is reported in the endomyocardium and midmyocardium. Prolonged action potential duration in LQTS may cause prolonged cardiac contraction, which can be assessed by strain echocardiography. We hypothesized that myocardial contraction is most prolonged in sub...
متن کاملArrhythmia/Electrophysiology Transmural Differences in Myocardial Contraction in Long-QT Syndrome Mechanical Consequences of Ion Channel Dysfunction
Background—Long-QT syndrome (LQTS) is characterized by prolonged myocardial action potential duration. The longest action potential duration is reported in the endomyocardium and midmyocardium. Prolonged action potential duration in LQTS may cause prolonged cardiac contraction, which can be assessed by strain echocardiography. We hypothesized that myocardial contraction is most prolonged in sub...
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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...
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Sexual dimorphism is a well-established phenomenon, but its degree varies tremendously among species. Since the early days of Einthoven's development of the three-lead galvanometer ECG, we have known there are marked differences in QT intervals of men and women. It required over a century to appreciate the profound implications of sex-based electrophysiological differences in QT interval on the...
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ژورنال
عنوان ژورنال: Circulation
سال: 2010
ISSN: 0009-7322,1524-4539
DOI: 10.1161/circulationaha.110.960377