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|Title:||A review of beat-to-beat vectorcardiographic (VCG) parameters for analyzing repolarization variability in ECG signals|
|Citation:||Biomedical Engineering/Biomedizinische Technik, 2016; 61(1):3-17|
|Muhammad A. Hasan, Derek Abbott|
|Abstract:||Elevated ventricular repolarization lability is believed to be linked to the risk of ventricular tachycardia/ventricular fibrillation. However, ventricular repolarization is a complex electrical phenomenon, and abnormalities in ventricular repolarization are not completely understood. To evaluate repolarization lability, vectorcardiography (VCG) is an alternative approach where the electrocardiographic (ECG) signal can be considered as possessing both magnitude and direction. Recent research has shown that VCG is advantageous over ECG signal analysis for identification of repolarization abnormality. One of the key reasons is that the VCG approach does not rely on exact identification of the T-wave offset, which improves the reproducibility of the VCG technique. However, beat-to-beat variability in VCG is an emerging area for the investigation of repolarization abnormality though not yet fully realized. Therefore, the purpose of this review is to explore the techniques, findings, and efficacy of beat-to-beat VCG parameters for analyzing repolarization lability, which may have potential utility for further study.|
|Keywords:||Electrocardiography (ECG); QT interval variability; repolarization; vector electrocardiogram (VCG)|
|Rights:||©2016 by De Gruyter.|
|Appears in Collections:||Medical Sciences publications|
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