OBJECTIVE QT dispersion (QTd) has been proposed as a marker of ventricular repolarization inhomogeneity and several investigations have proved the relationship between it and cardiac ischemia, ventricular arrhythmia and sudden cardiac death. The aim of this study was to assess the relation between coronary artery involvement and QTd, and QTc dispersion (QTcd) in the acute phase of Kawasaki dise...

OBJECTIVE The aim of the study was to evaluate QT dispersion (QTd), an indicator of repolarization heterogeneity, and its relation to ventricular arrhythmias in patients with ankylosing spondylitis (AS). METHODS A full history, clinical examination, electrocardiograms and 24-h Holter monitoring were performed in 88 AS patients and 31 volunteers of similar age and sex. Groups were compared bas...

Various studies have reported the effect of severe malnutrition on electrolyte levels and electrocardiographic parameters. However, only a few have reported these findings in mild and moderate grades of malnutrition in children. Therefore, the objective of this study was to assess the effect of malnutrition (mainly mild and moderate grades) on corrected QT interval (QTc) and QT dispersion (QTcd...

Diabetic autonomic neuropathy (DAN) is the least recognized and understood complications of diabetes despite its significant negative impact on survival and quality of life in people with diabetes. QT dispersion in a routine Electrocardiogram (ECG) is a useful marker to identify Type 2 diabetes mellitus (T2DM) patients with a high mortality risk. Therefore this study was undertaken to assess th...

BACKGROUND Coronary slow-flow (CSF) is an angiographic phenomenon characterised by delayed opacification of vessels in the absence of any evidence of obstructive epicardial coronary disease. QT interval dispersion (QTD) reflects regional variations in ventricular repolarisation and cardiac electrical instability and has been reported to be longer in patients with CSF. AIM To examine QT durati...

Objectives: Evaluate electrocardiographic and echocardiographic data in asymptomatic patients affected by Systemic Sclerosis (SSc) compared to healthy subjects, to assess their correlations in a case-control study. Methods: 71 female patients affected by SSc (Group A) were compared to 60 healthy female subjects (Group B). Both patients and controls were evaluated by electrocardiogram and trans-...

Brugada syndrome (BS) is associated with sudden cardiac death and the markers for ventricular fibrillation (VF) remain unclear, so the activation-recovery interval (ARI) dispersion and recovery time (RT) dispersion were investigated as possible markers in 20 subjects with BS (BS group) and 22 healthy individuals (H group). The 20 BS subjects were divided into 8 cases with documented VF (BS-VF g...

Objective—To determine the normal values of QT and QTc dispersion and the eVects of sinus arrhythmia on QT dispersion in healthy children. Patients and setting—The study was carried out in a university hospital on 372 local schoolchildren (200 male, 172 female), aged seven to 18 years. Methods—The QT and preceding RR intervals of at least one sinus beat were measured manually in a range of nine...

BACKGROUND Several reports have demonstrated an association between psoriasis and cardiovascular diseases. P wave dispersion (PWD) is the most important electrocardiographic (ECG) markers used to evaluate the risk of atrial arrhythmias. QT dispersion (QTD) can be used to assess homogeneity of cardiac repolarization and may be a risk for ventricular arrhythmias. AIM To search PWD and QTD in pa...

OBJECTIVE To determine the normal values of QT and QTc dispersion and the effects of sinus arrhythmia on QT dispersion in healthy children. PATIENTS AND SETTING The study was carried out in a university hospital on 372 local schoolchildren (200 male, 172 female), aged seven to 18 years. METHODS The QT and preceding RR intervals of at least one sinus beat were measured manually in a range of...