Sudden cardiac death increases during winter months in both men and women. The heart rate–corrected QT (QTc) interval exhibits circadian variation. However, little is known about QTc interval variation with month of year. We sought to determine whether the QTc interval varies with month of year...
with stable coronary artery disease (CAD).Methods: The effects of acute ethanol steady-state intravenous infusion (0.72 g/kg body weight within 60 min) on QT interval and QT dispersion, assessed by 12-lead electrocardiograms (ECG), were studied in 22 men with stable CAD and in 10 controls...
Estimated lower limit of the reference value of QT interval in healthy young Japanese men using the bootstrap methodBackground Recently, a short QT interval (QT) has been thought to be a risk f actor of the fatal cardiac arrhythmia as well as a prolonged QT. To avoid unexpected sudden ...
QT interval varies with heart rate females have a longer QT interval than males definitions vary in the literature but as a guide, normal QTc intervals are <450 milliseconds (ms) for men and <460 ms for womena QTc between these values and 500 ms is considered prolonged ...
Results In covariate-adjusted models, QTc was associated with general mortality (hazard ratio (HR): 1.19; 95% confidence interval (CI): 1.03, 1.38). Compared with higher tertiles, subjects in the lowest tertile of left ventricular mass index (HR=1.73, 95% CI: 1.26, 2.36) showed the ...
We attempted to evaluate whether subjects who exhibit prolonged corrected QT (QTc) interval (≥440 ms in men and ≥460 ms in women) on ECG, with and without ECG-diagnosed left ventricular hypertrophy (ECG-LVH; Cornell product, ≥244 mV×ms), are at increased risk of stroke. Among the 10...
The normal QT interval depends on age, gender, and other physiological conditions, but a QT interval ≥ 470–480 ms, in men and women respectively, is sufficient to suspect LQTS3(Fig.1). Whereas aLQTS may be due to drugs, electrolyte abnormalities, eating disorders, coronary artery disease...
The normal QT interval depends on age, gender, and other physiological conditions, but a QT interval ≥ 470–480 ms, in men and women respectively, is sufficient to suspect LQTS3(Fig.1). Whereas aLQTS may be due to drugs, electrolyte abnormalities, eating disorders, coronary artery disease...
QT intervals of both women and men with metabolic syndrome were significantly higher than normal limits of QT interval (p0,01).Conclusion: Metabolic syndrome found as associated with a prolonged QTc. Results of our study suggest that QTc interval length was increased in patients with metabolic ...
QT dynamicity: a prognostic factor for sudden cardiac death in chronic heart failure Introduction:The aim of this study was to determine whether impaired adaptation of the QT interval to changes in heart rate predicts sudden death in patien... A Pathak,D Curnier,J Fourcade,... - 《European...