Results 1 to 10 of about 180,107 (249)
Methods of Assessment and Clinical Relevance of QT Dynamics [PDF]
Indian Pacing and Electrophysiology Journal, 2005 The dependence on heart rate of the QT interval has been investigated for many years and several mathematical formulae have been proposed to describe the QT interval/heart rate (or QT interval/RR interval) relationship. While the most popular is Bazett’s
Beata Sredniawa +4 more
doaj +1 more source
The Egyptian Heart Journal, 2014 Background: Occupational factors are likely to contribute to increased cardiovascular disease risk among emergency medical responders (EMR). The aim of this study was to clarify whether EMR stressful Job and their prolonged exposure to work stress are ...
E. El-safty +5 more
doaj +3 more sources
Congenital Short QT Syndrome [PDF]
Indian Pacing and Electrophysiology Journal, 2004 Long QT intervals in the ECG have long been associated with sudden cardiac death. The congenital long QT syndrome was first described in individuals with structurally normal hearts in 1957.1 Little was known about the significance of a short QT ...
Charles Antzelevitch, Johnson Francis
doaj +2 more sources
Prevalence of the QT interval prolongation and its risk factors in hospitalized geriatric patients: findings of a single center cross-sectional study in Pakistan [PDF]
BMC GeriatricsBackground and objectives Geriatric inpatients are particularly susceptible to Torsades de Pointes (TdP) because they are usually polymorbid and often take QT-prolonging drugs.
Huma Tanveer +9 more
doaj +2 more sources
Altered circadian rhythmicity of the QT interval predicts mortality in a large real-world academic hospital population [PDF]
HeliyonObjective and rationale: Small studies have shown that the QT interval follows a circadian rhythm. This finding has never been confirmed in a large real-world hospital population and the clinical meaning of disrupted rhythmicity remains unknown. Methods:
Rutger R. van de Leur +6 more
doaj +2 more sources
A Study on the Diurnal Variation of Ventricular Repolarization Parameters in Patients with Obstructive Sleep Apnea [PDF]
Zhongguo quanke yixue, 2022 BackgroundObstructive sleep apnea hypopnea syndrome (OSAHS) is a common sleep breathing disorder. More and more studies have shown that OSAHS has a significant correlation with cardiovascular disease.
YANG Beibei, JIANG Junguang, SHI Jiang, ZHANG Yang
doaj +1 more source
Journal of the Formosan Medical Association, 2023 Background: Fluoroquinolones, crucial components of treatment regimens for drug-resistant tuberculosis (TB), are associated with QT interval prolongation and risks of fatal cardiac arrhythmias. However, few studies have explored dynamic changes in the QT
Ke-Shiuan Ju +8 more
doaj +1 more source
The Measurement of the QT Interval [PDF]
Current Cardiology Reviews, 2014 The evaluation of every electrocardiogram should also include an effort to interpret the QT interval to assess the risk of malignant arrhythmias and sudden death associated with an aberrant QT interval. The QT interval is measured from the beginning of the QRS complex to the end of the T-wave, and should be corrected for heart rate to enable comparison
Postema, Pieter G., Wilde, Arthur A. M.
openaire +2 more sources
Exploring electrocardiographic alterations and the prolongation of QT interval in patients with diabetes mellitus. [PDF]
J Family Med Prim CareArya T +4 more
europepmc +2 more sources
Journal of Human Hypertension, 2000 QT interval has been determined in 103 monozygotic (MZ) and 198 dizygotic (DZ) female twins. Mean values of corrected QT (QTc) were almost identical for both groups at 413 ms (MZ) and 412 ms (DZ). There was a significant age and environmental effect on QT interval. Heritability explained about 25% of the variation in QT.
N, Carter +6 more
openaire +2 more sources