Results 11 to 20 of about 182,594 (345)

QT interval

open access: yesThe 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

Short-Term Beat-to-Beat QT Variability Appears Influenced More Strongly by Recording Quality Than by Beat-to-Beat RR Variability

open access: yesFrontiers in Physiology, 2022
Increases in beat-to-beat variability of electrocardiographic QT interval duration have repeatedly been associated with increased risk of cardiovascular events and complications.
Ondřej Toman   +14 more
doaj   +1 more source

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

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

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   +2 more sources

A genome-wide association scan of RR and QT interval duration in 3 European genetically isolated populations:the EUROSPAN project [PDF]

open access: yes, 2009
We set out to identify common genetic determinants of the length of the RR and QT intervals in 2325 individuals from isolated European populations.We analyzed the heart rate at rest, measured as the RR interval, and the length of the corrected QT ...
,   +20 more
core   +1 more source

QT interval in twins [PDF]

open access: yesJournal 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

QT Interval Changes in Moderate and Severe Brain Injuries [PDF]

open access: yes, 2012
Backgrounds: Traumatic brain injuries are common mortality causes in many countries. Electrocardiogram (ECG) changes after brain injuries are known, and among them alteration of QT interval is common.
Abbasi Fard, Salman.   +4 more
core   +1 more source

Recent heart rate history affects QT interval duration in atrial fibrillation. [PDF]

open access: yesPLoS ONE, 2017
QT interval prolongation is associated with a risk of polymorphic ventricular tachycardia. QT interval shortens with increasing heart rate and correction for this effect is necessary for meaningful QT interval assessment.
Fady S Riad   +4 more
doaj   +1 more source

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