Results 11 to 20 of about 59,149 (179)

Methods of Assessment and Clinical Relevance of QT Dynamics

open access: yesIndian 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

Effect of QT interval-prolonging drugs taken in pregnancy on the neonatal QT interval [PDF]

open access: yesFrontiers in Pharmacology, 2023
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]

open access: yesActa Medica Iranica, 2003
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

QT Interval Revisited —Not Just the Matter of “Interval,” but “Dynamics, Variability and Morphology” Matter!— [PDF]

open access: yesJournal of Arrhythmia, 2007
Recently, the effects of QT interval prolongation have received more attention among clinicians, industry, and official regulatory agencies. Some have advocated the total elimination or discontinuing development of drugs which prolong the QT interval. In
Tetsunori Saikawa, MD   +2 more
doaj   +2 more sources

Congenital Short QT Syndrome

open access: yesIndian 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   +1 more source

Short QT interval syndrome

open access: yesКардиоваскулярная терапия и профилактика, 1970
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   +2 more sources

METHODOLOGICAL APPROACHES TO MEASURING AND ESTIMATING THE DURATION OF QT INTERVAL OF A STANDARD ELECTROCARDIOGRAM

open access: yesŽurnal Grodnenskogo Gosudarstvennogo Medicinskogo Universiteta, 2019
Interpretation of each electrocardiogram should include measurement and evaluation of the QT interval, because both an increase and a decrease in its duration are associated with a risk of polymorphic ventricular tachycardia and sudden cardiac death ...
Kalatsei L. V., Snezhitskiy V. A.
doaj   +1 more source

Common Genetic Variation Near the Phospholamban Gene Is Associated with Cardiac Repolarisation: Meta-Analysis of Three Genome-Wide Association Studies [PDF]

open access: yes, 2009
To identify loci affecting the electrocardiographic QT interval, a measure of cardiac repolarisation associated with risk of ventricular arrhythmias and sudden cardiac death, we conducted a meta-analysis of three genome-wide association studies (GWAS ...
Rice, K. (Kenneth)   +282 more
core   +1 more source

QT interval analysis in type 2 diabetic patients

open access: yesمجلة كلية الطب, 2011
Background: The electrocardiographic QT interval has been extensively studied in diabetes mellitus. Recently, there has been increasing interest in the relationship between diabetes and QT abnormalities .The QT interval, which is easily obtained from a ...
Kawthar H. Msayer
doaj   +1 more source

QTc evaluation in patients with bundle branch block

open access: yesInternational Journal of Cardiology: Heart & Vasculature, 2020
Proper measurement of the QT interval on the 12-lead body-surface ECG is challenging in daily practice. Even more difficult is its correct estimation in the presence of repolarization abnormalities, arrhythmias or bundle-branch blocks (BBB).
Harilaos Bogossian   +9 more
doaj   +1 more source

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