Results 1 to 10 of about 1,015,716 (176)
The Measurement of the QT Interval [PDF]
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 +3 more sources
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
Methods of Assessment and Clinical Relevance of QT Dynamics [PDF]
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
Effect of QT interval-prolonging drugs taken in pregnancy on the neonatal QT interval [PDF]
Introduction: Acquired QT interval prolongations due to drug side effects can result in detrimental arrhythmia. Maternal use of placenta-permeable drugs may lead to fetal exposure, thus leading to an increased risk of neonatal QT prolongation and ...
Holger Michel +13 more
doaj +2 more sources
Increases of QT dispersion, corrected QT dispersion and QT interval in young healthy individuals during Ramadan fasting [PDF]
Ramadan fasting is one of the most important religious duties of Muslims, that its effect on the heart has not been determined yet. Our objective was to evaluate the effect of Ramadan fasting on ventricular repolarization as assessed by QT interval ...
Moradmand S +6 more
doaj +3 more sources
Congenital Short QT Syndrome [PDF]
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 +1 more source
Short QT interval syndrome [PDF]
Every year, sudden cardiac death (SCD) takes lives of 400 000 American citizens, and in 10-20% ofthe cases, fatal outcome is explained by hereditary pathology.
I. G. Fomina +2 more
doaj +1 more source
A Study on the Diurnal Variation of Ventricular Repolarization Parameters in Patients with Obstructive Sleep Apnea [PDF]
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
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
Corrected QT interval and QT dispersion in temporal lobe epilepsy
Background Cardiac arrhythmias are expected among patients with epilepsy due to the effect of anti-epileptic drugs. Temporal lobe epilepsy also causes autonomic seizures that may affect heart rhythm.
Maram Samy Nasef +5 more
doaj +1 more source

