Fragmented QRS Wave as a Marker of Cardiac Events in Various Cardiac Diseases
نویسندگان
چکیده
منابع مشابه
Fragmented QRS frequency in patients with cardiac syndrome X
The term “cardiac syndrome X” (CSX) was introduced more than 40 year ago by Kemp (1) who described a group of patients with angina-like chest pains and normal coronary artery angiograms. Since then, the mosaic of knowledge has gradually built up; however, the letter “X” in this term characterizes the fact that evidence and knowledge on this syndrome are still limited and controversial (2). CSX ...
متن کاملFragmented QRS frequency in patients with cardiac syndrome X
OBJECTIVE Cardiac syndrome X (CSX) is characterised by typical exertional chest pain, a positive response to exercise testing, and a normal coronary angiography. The relationship of CSX with myocardial fibrosis and ischemia has been clearly demonstrated in previous studies. In addition, fragmented QRS (fQRS) has been reported in the literature as an indicator of myocardial fibrosis. The aim of ...
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Various noninvasive tests for risk stratification of sudden cardiac death (SCD) were studied, mostly in the context of structural heart disease such as coronary artery disease (CAD), cardiomyopathy and heart failure but have low positive predictive value for SCD. Fragmented QRS complexes (fQRS) on a 12-lead ECG is a marker of depolarization abnormality. fQRS include presence of various morpholo...
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Objective(s): MicroRNAs (miRNAs) are a subfamily of small noncoding RNAs that play a variety of roles in regulating gene expression in nearly all organisms. They affect different biological pathways by post-transcriptionally regulating mRNAs. Aside from miRNAs’ role in maintaining cellular homeostasis, their perturbation is related to several pathologic states and dis...
متن کاملFragmented QRS as a marker of conduction abnormality and a predictor of prognosis of Brugada syndrome.
BACKGROUND Conduction abnormalities serve as a substrate for ventricular fibrillation (VF) in patients with Brugada syndrome (BS). Signal-averaged electrograms can detect late potentials, but the significance of conduction abnormalities within the QRS complex is still unknown. The latter can present as multiple spikes within the QRS complex (fragmented QRS [f-QRS]). We hypothesized that f-QRS c...
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ژورنال
عنوان ژورنال: Circulation Journal
سال: 2013
ISSN: 1346-9843,1347-4820
DOI: 10.1253/circj.cj-13-1311