Articles > Journals > Medical journals > Journal of Electrocardiology articles > October 2005

Article: Are nondipolar components of electrocardiogram correlated to repolarization abnormality in ischemic patients or to noise?

Article from:
Journal of Electrocardiology
Article date:
October 1, 2005
Author:
Copyright

Joel Xue, PhD(a), Robert Farrell, PhD(a), Scott Wright, MD(c), Milos Kesek, MD(c,b) (a GE Healthcare, Milwaukee, WI, USA; b Mayo Clinic Foundation, Rochester, MN, USA; c Norrland University Hospital, Umea, Sweden)

Background: The nondipolar components of the T wave have been assumed to reflect a local repolarization inhomogeneity. The aim of this study is 2-fold: to find the relationship between the nondipolar components and the signal-to-noise ratio of electrocardiograms (ECGs), and also to find if they can be used as additional features for stratifying patients with chest pain in a computerized ECG interpretation algorithm.

Methods: Using principal component analysis, the ST-T segment of ...

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