New algorithm for QT dispersion analysis in XYZ-lead Holter ECG. Performance and applications

Author

Caminal, Pere ; Blasi, A. ; Vallverdu, M. ; Viñolas, X. ; Jané, R. ; Laguna, P. ; Pitzalis, M.V. ; Rizzon, P. ; Zareba, W. ; Bayés, A.

Author_Institution

Dep. ESAII, Univ. Politecnica de Catalunya, Barcelona, Spain

fYear

1998

fDate

13-16 Sep 1998

Firstpage

709

Lastpage

712

Abstract

In this paper a new algorithm for automatic analysis of QT dispersion (QTd) in three-lead (X,Y,Z) Holter ECG records is presented. To evaluate its performance the authors have compared automatic with manual annotations using a set of 1000 beats of Holter ECG records from the IDEAL Data Base. The signals have been automatically analyzed and the same beats have been analyzed by two cardiologists. The results obtained show that the reproducibility of the automatic QTd measurement is comparable to manual. QTd has been studied as a discriminator of patients with Dilative Cardiomyopathy from healthy subjects. The authors have found that QTd in 24 hours presents statistically significant differences when comparing subjects from those two groups. They have analyzed also mean and standard deviation of RR, QT and QTc intervals to determine their statistical significance in discriminating subjects from both groups

Keywords

electrocardiography; medical signal processing; 24 h; Dilative Cardiomyopathy patients; Holter ECG; IDEAL Data Base; QT dispersion analysis algorithm; XYZ-lead; automatic annotations; cardiologists; electrodiagnostics; healthy subjects; manual annotations; statistical significance; Algorithm design and analysis; Cardiology; Detectors; Dispersion; Electrocardiography; Heart rate interval; Hospitals; Morphology; Signal analysis; USA Councils;

fLanguage

English

Publisher

ieee

Conference_Titel

Computers in Cardiology 1998

Conference_Location

Cleveland, OH

ISSN

0276-6547

Print_ISBN

0-7803-5200-9

Type

conf

DOI

10.1109/CIC.1998.731972

Filename

731972