Increased QT variability in patients with hypertrophic cardiomyopathy

Author

Migaux, ML ; Marciano, F. ; Cuomo, S.

Author_Institution

Ist. di Cibernetica, CNR, Naples, Italy

fYear

2001

fDate

2001

Firstpage

385

Lastpage

388

Abstract

The purpose of this study was to examine QT interval variability in hypertrophic cardiomyopathy (HCM) by using frequency domain indices. Twenty-six subjects participated to the study: 16 had HCM (5 females, 9 males; mean age 39±13 years), 10 were healthy volunteers (5 females, 5 males, mean age 35±13 years), who served as controls. Twenty-four-hour Holter recordings of each subject were analysed on a homemade Holter analyser. The following spectral domain measures of QT interval variability were computed: ultra low (ULF), very low (VLF), low (LF) high frequency (HF) and total power. Spectral domain measures of QT interval variability were significantly higher in subjects with HCM than in controls. Further studies are required to evaluate whether analysis of QT variability on Holter recordings might have prognostic implications

Keywords

electrocardiography; medical diagnostic computing; spectral-domain analysis; Holter recordings; QT interval variability; frequency domain indices; hypertrophic cardiomyopathy; prognostic implications; spectral domain measures; Cardiology; Cybernetics; Electrocardiography; Frequency measurement; Hafnium; Heart rate interval; Hospitals; Patient monitoring; Power measurement; Rhythm;

fLanguage

English

Publisher

ieee

Conference_Titel

Computers in Cardiology 2001

Conference_Location

Rotterdam

ISSN

0276-6547

Print_ISBN

0-7803-7266-2

Type

conf

DOI

10.1109/CIC.2001.977673

Filename

977673