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QT dispersion in hypothyroidism
International Journal of Cardiology, 1999Abstract We studied ten women (age: 40±12 years) with primary hypothyroidism. Baseline and after T4 treatment (euthyroid stage), all patients' resting ECGs were recorded. After T4 treatment, QTd ( P =0.036), QTad ( P =0.016), JTd ( P =0.0001), JTad ( P =0.005), Ted ( P =0.036), QRS ( P =0.046), QTcd ( P =0.036), QTacd ( P =0.028), JTcd ( P =0.006 ...
Altun, A, Altun, G, Özbay, G
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QT interval dispersion: dispersion of ventricular repolarization or dispersion of QT interval?
Journal of electrocardiology, 1998The QT interval (QTI) has long been useful as a clinical index of the duration of ventricular repolarization, particularly as a marker of prolonged repolarization and its well-established association with arrhythmogenic cardiac states. Likewise, inhomogeneity (dispersion) of repolarization has been linked definitively to increased susceptibility to ...
R L, Lux +5 more
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Significance of QT dispersion in the long QT syndrome
Progress in Cardiovascular Diseases, 2000The long QT syndrome (LQTS) has often been considered as a model to study the abnormalities of cardiac repolarization in humans because it represents a pure electrical disease with no evidence of cardiac structural abnormalities. The arrhythmogenic potential of prolonged ventricular repolarization has been extensively studied both in experimental ...
Napolitano C +2 more
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QT dispersion: An electrocardiographic derivative of QT prolongation
American Heart Journal, 2001QT dispersion has been considered a surrogate for heterogeneity of repolarization, leading to ventricular arrhythmias.High-resolution 12-lead electrocardiograms were obtained in 15 patients with a history of ventricular tachycardia or ventricular fibrillation, 15 patients with congestive heart failure, 17 patients with a history of previous Q-wave ...
A D, Krahn +5 more
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QT Interval and QT Dispersion in Eating Disorders
Psychotherapy and Psychosomatics, 2004<i>Background:</i> Eating disorders are thought to be risk factors for cardiac sudden death secondary to arrhythmia. Results in previous studies on QT interval and QT dispersion, markers of fatal arrhythmia, have been inconsistent. <i>Methods:</i> We prospectively examined 179 female eating disorder patients, being over 18 years
Yoshiyuki, Takimoto +7 more
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Cellular basis for QT dispersion
Journal of Electrocardiology, 1998The cellular basis for the dispersion of the QT interval recorded at the body surface is incompletely understood. Contributing to QT dispersion are heterogeneities of repolarization time in the three-dimensional structure of the ventricular myocardium, which are secondary to regional differences in action potential duration (APD) and activation time ...
C, Antzelevitch +3 more
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Measurement and interpretation of QT dispersion
Progress in Cardiovascular Diseases, 2000QT dispersion was proposed as an index of the spatial inhomogeneity of ventricular recovery times. The results of studies that found significant correlation between dispersion of ventricular recovery times measured with monophasic action potentials and QT dispersion were interpreted as proof of the direct link between QT dispersion and the dispersion ...
V, Batchvarov, M, Malik
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Prolonged corrected QT dispersion
Oncology Reports, 1997The anthracyclines are antibiotics effective in the treatment of many malignancies. However, their usefulness is limited by the development of potentially acute or chronic cardiotoxicity. No definitive guidelines exist for monitoring cardiac function during and after anthracyclines although methods have been suggested.
M, Orditura +7 more
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QT dispersion in patients with acromegaly
Endocrine, 2012Acromegaly is a rare condition caused by a pituitary adenoma that secretes growth hormone. The mortality rate is 72 % higher in patients with acromegaly than in the general population according to meta-analyses. Mortality analysis has shown as many as 60 % of acromegalic patients die due to cardiovascular disease.
Mustafa, Unubol +4 more
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QT intervals and QT dispersion in patients with subarachnoid hemorrhage
Journal of Anesthesia, 2001To clarify the clinical significance of QT dispersion and the longest QT intervals (L-QTc) in patients with subarachnoid hemorrhage (SAH).ECGs, clinical features, and laboratory data were analyzed in 38 patients with SAH (R) and 30 with unruptured cerebral aneurysms (U).
K, Sato, M, Kato, T, Yoshimoto
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